Rudeus

Biodata

Feature	Information
Name	Rudeus Greyrat (鲁迪乌斯)
Alias(es)	Rudy; Mire
Gender	Male
Affiliation	Greyrat family; Boreas family; Ranoa Magic University; Ariel Anemoi Asura’s escort party
Occupation/Role	Magician; Ranoa Magic University student; former private tutor to Eris Boreas Greyrat
Spouses	Roxy Migurdia; Sylphiette; Eris Boreas Greyrat 498
Children	Lucy Greyrat, with Sylphiette; Lara “Lala” Greyrat, with Roxy; an unborn child with Eris 502
Residence	Greyrat family home in Sharia 289 492 502
Status	Active; lost an arm during the Asuran escort mission and plans to have it regenerated in Millishion 432
First Appearance	Chapter 1

Power Progression

Stage / Realm / Level	Chapter	Notes
Beginner magic mastery	3	Trains by exhausting his mana daily; learns that repeated mana depletion increases his capacity.
Intermediate magic	3	Attempts intermediate water magic and accidentally destroys the Greyrat attic wall with an uncontrolled water cannon.
Intermediate magic, chantless casting	4	Has taught himself to intermediate magic and can cast without incantations by age three.
Advanced magic mastery	8	Masters most advanced magic during Roxy’s two-year tutelage.
Water Saint-tier magician	8	Successfully reproduces the Water Saint-tier spell Cumulonimbus and graduates from Roxy’s instruction.
Foresight Eye	165	Obtains a Demon Eye that lets him perceive several seconds into the future, though it initially causes severe disorientation.
Water King-class magician	303	Learns Roxy’s Water King-class spell Lightning, attaining Water King-class status and beginning to refine the spell for practical combat.
Close-range Lightning magic	304	Begins adapting the Water King-class spell Lightning into a faster, shorter-range spell intended for practical close combat.
Gravity magic	349	Creates a small anti-gravity field through chantless casting after researching King Dragon gravity magic and observing mana flow.
Refined Lightning magic	350	Perfects a direct Lightning variant that omits weather-formation processes, allowing controlled close-range use at an exceptionally high mana cost.
Aerial magical combat	369 379	Combines Gravity Magic, wind magic, chantless casting, and the Foresight Eye to fight from the air while maintaining ranged pressure.
Fighting God Armor Type II: Unit-01	399	Receives Aisha’s mana-intensive armor, which substantially improves its wearer’s defensive and offensive capabilities.
Advanced Lightning control and anti–North God Style training	403	After more than half a year of special training with Hilde, freely controls Lightning Magic’s range and power and forces North King Vita to retreat.
Qilin	427	Develops a devastating large-scale Lightning application by repeatedly expanding and recompressing immense mana in the sky, concentrating Water King-class Lightning into a single catastrophic bolt.
Armored aerial bombardment	463	Uses armor-assisted flight and a Rock Shell Machine Gun firing twelve projectiles per second, each approaching Emperor Rank power; also deploys Burst Rock Shell against Leda’s defenses.
Fighting God Armor Type II: Unit No. 2	465	Uses a defensive armor jointly researched and built with Hilde and Aisha. Its protection exceeds even the original Fighting God Armor’s, allowing him to withstand Leda’s sustained attacks.
Limited Summoning Magic instruction	502	Has learned some Summoning Magic from Perugius, but does not consider his proficiency impressive. Perugius proposes using his enormous mana reserves to summon a household familiar; the summoning has not yet occurred.

Background / History

Rudeus and his twin sister Hilde are born in Buena Village of the Asura Kingdom to Paul and Zenith Greyrat. By age two, Rudeus has taught himself magic from The Magic Textbook. Hilde recognizes that his abnormal maturity mirrors her own, and the twins confirm that they are both reincarnators; they agree to conceal this fact from their family. 1 2

In his previous life, Rudeus was a Japanese shut-in. When he meets Nanahoshi, he recognizes her as the last person whose face he saw before his former life ended. He remains reluctant to discuss that life, regarding its memories as a source of shame and, at times, an obstacle to living confidently in his new world. Hilde’s Soul Eye later allows her to estimate that he was approximately thirty to thirty-five years old before reincarnation. 206 227 228 280 432

Rudeus discovers that mana capacity can be expanded through intensive training and begins exhausting his reserves every day. His confidence repeatedly gets him into trouble, most notably when an intermediate spell destroys an attic wall. The incident prompts Paul and Zenith to hire Roxy Migurdia as the twins’ tutor. 3 4

Under Roxy, Rudeus studies magical theory, history, and culture while rapidly advancing beyond ordinary standards. He becomes capable of Saint-tier water magic and receives recognition as a Water Saint-tier magician after casting Cumulonimbus. Roxy also helps him overcome his fear of leaving the house. 4 8

Although he begins swordsmanship training at age five, Rudeus progresses far more slowly with a sword than with magic. He nonetheless continues training under Paul and later uses magic tactically alongside swordsmanship practice. 7 9 20

Rudeus and Hilde intervene when village children bully Sylphiette for her green hair. He befriends Sylphy and begins teaching her magic, believing that helping her become strong will protect her better than simply defending her himself. After initially mistaking Sylphy for a boy, he apologizes and reconciles with her once he learns she is a girl. 9 10 11 12 13

Wanting to continue improving and eventually attend Ranoa Magic University, Rudeus asks Paul for work to save tuition. Paul instead arranges for him to become Eris Boreas Greyrat’s private tutor, allowing him to earn money while continuing sword training under Ghislaine. 18 20 21 22

His original university plan includes paying for Sylphy to accompany him. Paul objects to the cost, distance, and danger, while Hilde questions whether the arrangement would make Sylphy excessively dependent on him. Rudeus agrees to delay independent travel until age twelve and offers to work toward their tuition. 18

During a kidnapping incident involving Eris, Rudeus is abducted by human traffickers and taken to Royal Capital Arus. Hilde rescues him, and he insists on finding Eris because his own kidnapping plan was exploited and he considers himself responsible for her disappearance. Together, the twins infiltrate the traffickers’ underground routes, rescue Eris, and escape through the sewers. 36 37 38 39 40 41 42 43 44 45 46 47 48 49

While serving the Boreas family, Rudeus supports Eris’s progress in etiquette and studies, including at her tenth birthday banquet. His relationship with her gradually becomes more personal, and Philip later agrees to their marriage while offering sponsorship for their future studies on the Northern Continent. 68 97

A massive mana disturbance interrupts Rudeus’s demonstration of Cumulonimbus outside Ranoa. When a pillar of light descends, he rushes to save Eris despite Hilde’s attempt to protect him; he, Eris, and Ghislaine are engulfed by the phenomenon and separated from their former lives. 97 98

During his subsequent travels, Rudeus gains the Foresight Eye, which shows him several seconds of the future but initially overwhelms his senses. He eventually reunites with Roxy, Hilde, Eris, and Ruijerd, though Hilde’s relief at finding him is expressed through an immediate punch. 165 166

The reunited travelers divide their forces, with Rudeus, Eris, and Roxy proceeding to the Millis Continent while Hilde’s group continues searching the Demon Continent. Rudeus reunites with Paul in Millishion, but ultimately prioritizes his promise to take Eris home rather than remaining with the Search Group. Paul accepts his decision despite hoping for his assistance. 172 173 174 175

After Eris’s departure to pursue further training, Rudeus discovers that he has become impotent. Hilde suggests seeking a cure at Ranoa Magic University, and they travel to Sharia, where he recalls his long-standing ambition to study there. 206 216

After reaching Ranoa Magic University, Rudeus continues advancing as a magician and joins efforts to locate Roxy during a dangerous labyrinth expedition. His experience against the Magic Stone Hydra and other threats reinforces his awareness that Hilde has repeatedly carried burdens he could not. 242 254 257 349

Following the labyrinth expedition, Hilde is reported dead after being swallowed by the Magic Stone Hydra. Rudeus isolates himself in grief and blames his opposition to her proposed solo battle for putting her in danger while saving him and Roxy. He purchases a cemetery plot for her; after Hilde returns alive, she obtains a refund, which he decides to use to furnish their new home. 266 280

Rudeus and Roxy plan their marriage and seek a home in Sharia, where he asks Hilde’s assistance with a haunted estate. He later becomes a Water King-class magician and devotes himself to researching Lightning and Gravity Magic, seeking the strength to protect his loved ones without relying wholly on Hilde. 289 303 349 350

His Gravity Magic research begins with lessons from Hilde, whose battle-aura techniques create an anti-gravity field. Although he cannot use battle aura himself, he studies her mana flow through a special magnifying glass and attempts to reproduce only the anti-gravity effect through magic. His first attempts fail, but continued research produces a working, initially unstable field. 323 328 349

Rudeus initially trusts Hitogami because of the apparent benefits of his previous advice. He follows a request to inspect his basement without finding anything visibly unusual. When Roxy’s health subsequently deteriorates and he learns of Hitogami’s apparent involvement, he becomes determined to protect her and kill Hitogami. His confrontation with Orsted ends in a decisive defeat, but Rudeus subsequently shares his knowledge with Orsted and learns that the child in Roxy’s womb is the Savior whom Hitogami seeks to prevent from being born. 337 359 368 369 370 371 372

Rudeus later learns that Fitz is Sylphy and that she has fled Ranoa alongside Ariel following an assassination attempt that kills Luke Notos Greyrat. He also learns that Lucy, the child Sylphy entrusts to him, is his biological daughter, and he accepts responsibility for raising her. He tells Roxy about the child, and she accepts Lucy into their family while encouraging him to reunite with Sylphy. 395 396 397 398 399

After reuniting with Eris, Rudeus asks her to help him protect Sylphy and Ariel during the looming Asuran conflict. He catches up with Sylphy’s party, rescues her, and joins Sylphy, Eris, Ghislaine, and the others as an escort for Ariel’s return to the royal capital. 401 432

During the rescue, his improved Lightning Magic forces North King Vita to withdraw. Rudeus subsequently confronts Sylphy over her concealed identity; their emotional confrontation culminates in a kiss. 403

During the journey into the Asura Kingdom, Rudeus is ambushed by North Emperor Auber and loses an arm. He nevertheless leads the group’s defense, kills North King Vita with his newly developed Qilin, and determines that Auber likely evaded the attack through a prepared lightning rod. 425 426 427 428

After reaching Asura, Rudeus exchanges information with Hilde and learns that the Notos Family has betrayed Ariel’s faction. He subsequently reunites with Paul while traveling alongside Sylphy and Eris. 432 441

During a later confrontation involving Darius’s carriage, Rudeus supports Hilde with Mire and battles Water God Leda from the air. He uses the Fighting God Armor’s flight systems, rapid-fire Rock Shell weapons, and an explosive fragmentation attack, but Leda counters his magic and subjects him to sustained sword-aura attacks. His newly developed Unit No. 2 armor prevents serious damage, although her assault restricts his movement and ability to retaliate. 463 465

Rather than simply waiting for the elderly Leda to exhaust herself, Rudeus recognizes that Eris and Ghislaine’s struggle against Auber and Hilde’s deteriorating position against Isolte make delay dangerous. Understanding that Hilde’s plan depends on him breaking the stalemate, he begins gathering immense mana for a large-scale lightning spell. 465

After the Asuran incident, Rudeus, Sylphy, and Eris leave the shared strategic lodging to spend time together. He intends to return to Sharia promptly because Roxy is waiting at home with their child, and the group plans to buy souvenirs for her. By Hilde’s later visit, Sylphy and Eris have settled into the Greyrat household alongside Roxy. 473 492

Roxy subsequently organizes the family’s first girls’ night to help the three wives understand one another and establish ways to handle disagreements without placing Rudeus between them. Their shared love for him and their recollections of meeting him provide common ground. 498

When Eris’s pregnancy is confirmed, the family celebrates the prospect of a third child. Rudeus also recognizes that caring for Lucy and Lala, maintaining the large home, and handling daily chores already create a substantial workload, particularly while Roxy works at the university. He seeks Hilde’s assistance with finding household help and explains that Perugius has suggested summoning a familiar instead. Perugius is interested in what Rudeus’s extraordinary mana reserves might produce. 502

Personality

Rudeus is intelligent, curious, and intensely driven to improve his magic. He can be smug about his talent and reckless when experimenting, but he is capable of recognizing his shortcomings—particularly his vulnerability against skilled swordsmen and his lack of real combat experience. 3 4 20 40

His past experience with bullying motivates him to protect Sylphy. He is compassionate toward her and takes responsibility for teaching her magic, though he is often awkward and immature in matters of affection. 9 10 11 12 13

In dangerous situations, Rudeus initially struggles with fear and the moral weight of killing. During the rescue of Eris, however, he continues forward despite his distress and provides decisive magical support to Hilde. 39 40 41 45

Rudeus is self-critical about his dependence on Hilde’s strength. Rather than accepting that weakness, he researches new forms of combat magic and seeks close-combat training so that he can protect others and share the burdens Hilde carries. 349 375 379

He is fiercely devoted to Roxy and his family. Roxy’s illness, Sylphy’s initial departure, and the attacks on Ariel’s party leave him frightened, furious, and increasingly hostile toward Hitogami and his apostles. 359 368 398 425

His attachment to Hilde is particularly strong. During her confrontation with Atofe, he considers escaping rather than allowing her to die for Nanahoshi’s sake. Her apparent death after the labyrinth expedition also leaves him overwhelmed by guilt and unable to engage normally with others. 266 318

His experiences against Hitogami’s apostles make him increasingly tense and suspicious, to the point of doubting apparent allies and fearing hidden countermeasures. Despite this strain, he assumes responsibility for the safety of his traveling companions, organizes watches, and makes tactical decisions under pressure. 400 425 428 432

This suspicion becomes severe enough that he briefly mistakes Hilde herself for a disguised apostle and threatens her with lightning. He recognizes that his hostility is excessive, while Sylphy notices his exhaustion and urges him to rest. 428 431

His magical research is predominantly practical rather than purely theoretical. He prioritizes techniques that improve combat performance, adapting established spells through experimentation and reasoning informed by his previous life. 304 350 387

As he becomes more dependable, Rudeus increasingly evaluates the safety of the whole group rather than treating battles as isolated duels. Against Leda, he remains analytical under pressure and abandons a potentially safe endurance strategy because his companions cannot afford the delay. His concern for family welfare also extends to ordinary matters such as childcare, household workload, and carefully vetting long-term help. 465 502

Abilities & Skills

Magic

Rudeus is a prodigious Water King-class magician specializing in water magic, with an unusually large mana reserve developed through repeated depletion training. He can cast many spells without incantations. 3 4 8 303

• Reached Water Saint-tier ability after casting Cumulonimbus. 8
• Attains Water King-class status after learning the Water King-class spell Lightning. 303
• Can use beginner, intermediate, and most advanced magic. 4 8
• Uses magic flexibly for offense, terrain control, restraint, excavation, and support. 17 20 38 45
• Can use healing magic with an incantation, but cannot perform chantless healing magic like Hilde and Sylphy. 13 97
• His magical skill, particularly his command of Gravity Magic, eventually surpasses Roxy’s. 350
• Can maintain two spells simultaneously through chantless casting, an important requirement for balancing aerial movement with attacks. 379
• His mana reserves are approximately five times Hilde’s; even Hilde’s reserves are described as dozens of times greater than an Emperor Rank magician’s. Rudeus’s total mana is later stated to surpass Demon God Laplace’s. These comparisons concern mana capacity rather than a newly attained formal magic rank. 500 502
• By the development of Unit No. 2, Hilde judges that he can hold his own against ordinary Emperor Rank swordsmen and other magicians without armor, with a high chance of victory. Opponents above Emperor Rank remain the principal reason for his defensive armor. 465

Water Magic

Water magic is Rudeus’s principal discipline.

• Water Ball — Used to soak opponents and clean Sylphy after the bullying incident. 9
• Water Cannon — An uncontrolled intermediate casting destroys the attic wall. 3
• Mire — Restrains a Terminate Boar so Hilde can strike it down. 17
• Cumulonimbus — Water Saint-tier weather magic that creates a massive storm with wind, rain, thunder, and lightning. 8
• Wide-area Mire — Expands Mire over roughly fifty meters to trap Orsted and restrict his movement. 369
• Qilin — A massive Lightning attack created by repeatedly compressing mana in the sky; it annihilates North King Vita’s physical body and devastates the surrounding battlefield. 427 428
• Elite Water God Style practitioners can cut through the mana of Mire itself, stopping its effects despite the spell having no projectile trajectory. Leda and Isolte demonstrate this counter during the carriage battle. 463

Earth Magic

Rudeus employs earth magic for direct combat and practical problem-solving.

• Rock Shell — Fires rapid volleys in confined spaces; used to kill an assassin threatening Hilde and himself. 39
• Digs beneath a locked metal door to bypass it during the search for Eris. 40
• Creates mud pits to impede enemies while Hilde fights. 45
• Forms earth walls and earthen spikes as defensive measures and surprise attacks. 254 369
• Uses enhanced Rock Shell and Ice Spear Blizzard against labyrinth monsters. 242
• Earth Fortress — Raises an earthen dome and burrows his party underground to shield them from the blast of Qilin, even after losing an arm. 427
• Produces finely detailed figurines through precise earth manipulation and exceptionally strong stone bricks for construction. These applications also develop his mana control. 93 303 427
• Burst Rock Shell — A larger projectile designed to explode into scattered fragments after being cut apart. He uses its secondary effect to send fragments past Leda’s immediate defense and strike Darius’s carriage. 463

Wind and Fire Magic

• Uses wind magic to dry hair and clothing. 3 10
• Uses Fireball offensively and for illumination in underground passages. 20 39
• Attempts to combine fire magic with terrain manipulation while sparring Hilde. 20
• Uses wind magic alongside Gravity Magic to adjust his position during aerial combat. 379

Lightning and Gravity Magic

Rudeus develops powerful original applications of Lightning and Gravity Magic through study, experimentation, and his unusually deep mana reserves. 304 349 350

• Lightning Magic — A compact derivative of the Water King-class spell Lightning that directly compresses and releases mana without first creating a storm. It can be controlled for close-range attacks and paralysis, but consumes several times the mana of an ordinary Water King-class spell. 304 350
• His refined direct variant consumes approximately four to five times the mana of the original Water King-class spell and has less power than Emperor Rank magic. Its advantage lies in speed, controlled range, and practical close-combat use rather than mana efficiency. 350
• Electric — A broad electrical discharge capable of paralyzing multiple enemies at once, including Atofe and her guards when they are caught off guard. 321
• Early versions can shock Rudeus himself. Continued refinement allows him to regulate power and range without suffering the same self-inflicted effects. 321 350
• Gravity Magic — Creates anti-gravity effects that let Rudeus float, lift himself to great heights, alter the trajectory of incoming attacks, and keep distance from close-combat opponents. 349 369
• Learns its principles by observing Hilde’s battle-aura mana flow and researching King Dragons. He reproduces the anti-gravity component through magic rather than acquiring battle aura. 328 349
• Combines Gravity Magic, wind magic, and Lightning Magic to pressure opponents from the air while the Foresight Eye assists his aim. 369 379
• Aerial movement initially requires conscious balance control and supplementary wind magic; Gravity Magic alone does not grant effortless, flexible flight. 369 379
• After more than half a year of special training, controls Lightning Magic’s range and power as naturally as his own limbs, though this flexibility increases its mana cost. 403
• Qilin — Uses refined mana control to repeatedly expand and recompress a vast mass of mana, producing a genuine large-scale Lightning strike far more destructive than his ordinary close-range variants. 427
• His gravity-based training with Hilde helps her develop an anti-gravity response that later counters much of Alexander’s King Dragon Sword gravity manipulation. 486

Summoning Magic

Rudeus has received some Summoning Magic instruction from Perugius, but considers his proficiency too limited to be worth displaying. Perugius later suggests that he summon a familiar to meet his demanding requirements for household help. The proposal relies on the principle that greater mana expenditure generally produces a more powerful summoned being; the result of Rudeus performing such a summoning remains unshown. 502

• Lighting spirit — A summoning-derived illumination technique obtained from Nanahoshi. It provides stronger, longer-lasting, and more flexible light than an ordinary torch and is used while exploring the future Greyrat home. 289

Demon Eye

Rudeus possesses the Foresight Eye, a Demon Eye that allows him to see several seconds into the future. 165

• Initially suffers dizziness and disorientation while adjusting to its visions. 165
• Uses it to anticipate Hilde’s attempt to incapacitate him and to construct an earth-wall countermeasure. 254
• Relies on it to predict enemy movement in battle, though opponents of Orsted’s speed can still exceed its practical limits. 369 379
• Maintains constant vigilance with the eye while escorting Ariel’s party, though prepared ambushes and hidden enemies can still exploit openings. 425 426
• Sees a threatening vision of countless slashes overwhelming him when Leda prepares Sword Realm of Severance. The eye provides warning, but does not by itself supply a means of overcoming such an attack. 463

Swordsmanship

Rudeus trains under Paul and later has the opportunity to continue under Ghislaine, but his swordsmanship lags considerably behind his magic. 7 20 21 22

• Understands the value of physical conditioning and sword training for a magician’s survival. 18 20
• Is vulnerable in close quarters against competent swordsmen and often relies on Hilde’s protection in real combat. 20 39 40
• Through continued training, he becomes capable of fighting at approximately Saint-class in close quarters, though this remains a major weakness against stronger specialists. This assessment includes chantless magic and the Foresight Eye rather than establishing a formal Saint-ranked swordsmanship title. 375
• Cannot wrap himself in battle aura, limiting the benefits of conventional martial training and contributing to his need for magically powered armor. 328 375
• Seeks further instruction from Hilde to improve his close-combat survival and tactical flexibility. 375 379
• Receives specialized training in countering North God Style opponents, particularly by maintaining distance and refusing to let them dictate the battle’s pace. 403 428

Tactical Thinking

Rudeus is resourceful in unfamiliar situations.

• Uses terrain manipulation and traps against Hilde during their sparring match. 20
• Detects a hidden door behind a stone wall and develops a self-created spell to blast it open. 38
• Overloads Eris’s tracking collar magic circle, successfully disabling its tracking function. 46 47
• Uses aerial positioning, wide-area control magic, and repeated Lightning strikes to force enemies into disadvantageous positions. 369 375
• Trusts his intuition—his self-described “Roxy Radar”—to identify Roxy’s likely location in a labyrinth despite lacking visible evidence. 242
• Directs Ghislaine to disengage from Vita, protects the party inside an Earth Fortress, and uses Qilin to seize control of the battlefield. 427
• Deduces the purpose of Auber’s lightning rod and establishes a rotating night watch after recognizing the extent of Hitogami’s preparations. 428
• Uses explosive projectile fragments to bypass the immediate protection afforded by Leda’s swordsmanship. 463
• Evaluates interconnected battlefields while under attack, recognizing that simply outlasting Leda would expose Hilde, Eris, and Ghislaine to defeat. He instead prepares a major lightning attack to break the stalemate and reach Darius. 465
• Participates with Hilde and Aisha in researching and constructing armor tailored to his mana reserves, Gravity Magic, and defensive weaknesses. 463 465

Equipment / Weapons / Items

• Magic staff — Gift from Roxy; contains a red magic stone that provides limited magical amplification. 7
• Prideful Water Dragon King — A powerful staff Rudeus uses to amplify Cumulonimbus, Rock Shell, and Lightning Magic. 97 368 369
• Wooden sword — Used during swordsmanship training and sparring. 7 20
• Paul’s sword — Briefly borrows Hilde’s sword, originally given to her by Paul, during the rescue operation. 38
• Fighting God Armor Type II: Unit-01 — Mana-powered armor given to him by Aisha; its heavy mana consumption is manageable due to his enormous reserves. 399
• Fighting God Armor Type II: Unit No. 2 — A later armor jointly researched and constructed by Hilde, Rudeus, and Aisha, based on the Unit-01 possessed by Hilde. It uses a small quantity of the original armor’s special materials in critical areas, with conventional magic circles and mechanical structures supplying other functions. Its self-repair is slow and its transformation ability limited, but its defense surpasses even the original Fighting God Armor’s. Hilde specifically prioritizes protection against opponents above Emperor Rank. 465
• Armor flight system — Combines thrust emitted from the armor’s back with an internal Gravity Magic circle to permit aerial movement. The gravity circle is usable only by someone capable of Gravity Magic, making the armor particularly suited to Rudeus. 463
• Rock Shell Machine Gun — An arm-mounted armor weapon composed of twelve magic items. It draws directly on Rudeus’s mana to fire twelve Rock Shells per second, each with power close to Emperor Rank magic. Its extreme consumption makes it impractical for ordinary users. 463
• Lightning rod — Identifies a collapsible metal rod used by Auber to divert Qilin, proving the North Emperor likely survived the attack. Auber’s later appearance in the carriage battle confirms his survival. 428 463
• Diary — Records his daily experiences, training, and decisions. During Roxy’s illness, it becomes a means of examining his fear, helplessness, and self-doubt. 349 368
• Mana-observation magnifying glass — Uses a special magnifying glass provided by Hilde to observe her mana flow during his initial flight and Gravity Magic lessons. 328

Relationships

• Hilde Greyrat — Twin sister and fellow reincarnator. They are competitive and frequently bicker, but cooperate closely in combat; Rudeus increasingly relies on her protection and judgment. 2 17 39 40 41 42 43 44 45 Rudeus later recognizes that he cannot remain dependent on her strength and asks her to help train his close-combat abilities. 349 375 379 When separated during the Asuran conflict, they exchange intelligence on Ariel’s situation, the Notos Family’s betrayal, and the threat posed by Hitogami. 432 Her apparent death leaves him grief-stricken and self-blaming, while her later lessons become central to his Gravity Magic and anti–North God Style techniques. They also collaborate on Unit No. 2, whose exceptional defenses reflect her concern for his survival. 266 280 328 403 465 He later asks for her assistance with the household-help problem arising from Eris’s pregnancy. 502
• Paul Greyrat — Father and swordsmanship instructor. Paul recognizes Rudeus’s magical talent, teaches him the importance of physical training, and arranges his tutoring position. 4 7 18 20 21 22 They later reunite during the search for Zenith, and Paul remains proud of Rudeus despite comparing him with Hilde’s extraordinary reputation. 174 Rudeus reunites with him again after returning to the Asura Kingdom. 441 Paul subsequently becomes duke of the Notos Family; after returning to Sharia, Rudeus asks Hilde how his father is managing his responsibilities. 480 492
• Zenith Greyrat — Mother; proud and supportive of Rudeus’s magical aptitude. 1 4
• Roxy Migurdia — Rudeus’s former magic tutor and wife. Roxy broadens his knowledge, helps him overcome his fear of the outside world, and recognizes him as a Water Saint-tier magician. 4 8 They later reunite, marry, and have a daughter, Lala. Roxy’s pregnancy, illness, and the revelation that her unborn child is the Savior become central to Rudeus’s conflict with Hitogami. 289 359 372 399 Although initially hurt by the revelation about Lucy, Roxy accepts the child and encourages Rudeus to reconnect with Sylphy. She later organizes discussions among the three wives to build family harmony without forcing him to mediate every disagreement. 397 398 498
• Sylphiette — Childhood friend, former magic student, wife, and mother of Rudeus’s daughter Lucy. Rudeus protects her from bullying, teaches her magic, and develops feelings for her. 9 10 11 12 13 He later learns that Senior Fitz is Sylphy only after she leaves Ranoa with Ariel following the assassination attempt that kills Luke. 397 398 Rudeus accepts Lucy as his daughter, catches up to Sylphy’s party, rescues her, and accompanies her during Ariel’s return to Asura. 396 399 425 432 They reconcile after an emotional confrontation over her secrecy, and she later settles into his Sharia home as one of his three wives. 403 492 498
• Eris Boreas Greyrat — His former noble student and wife. Rudeus feels responsible for her abduction and works with Hilde to rescue her. 20 21 22 37 38 39 40 41 42 43 44 45 46 47 Philip later approves their marriage, but Eris leaves to pursue greater strength before eventually reuniting with Rudeus and agreeing to aid him in battle. 97 206 401 She subsequently fights beside Rudeus while escorting Ariel and trusts his battlefield judgment against Vita and Auber. 425 426 427 428 After returning to Sharia, she joins Roxy and Sylphy in the family household. Her pregnancy is later confirmed, and the family celebrates their expected third child. 492 498 502
• Ghislaine Dedoldia — Black Wolf Sword King and Rudeus’s swordsmanship teacher during his service to the Boreas family. 20 21 22 She later travels with Rudeus’s group and follows his tactical orders during their battle against North King Vita. 425 427 During the carriage battle, she and Eris occupy Auber while Rudeus confronts Leda. 463 465
• Ruijerd Superdia — A trusted traveling companion whom Rudeus respects and defends. Ruijerd’s care for Rudeus and Eris earns Rudeus’s gratitude. 165 166
• Orsted — The Dragon God who easily defeats Rudeus when testing him. Afterward, Rudeus entrusts Orsted with his knowledge of Hitogami and becomes involved in efforts to protect Roxy and the Savior. 369 372
• Aisha Greyrat — Younger sister and gifted magic-tool researcher. Rudeus assists her Lightning Magic research, and she provides him with Fighting God Armor Type II: Unit-01. 350 399 She also reveals Fitz’s identity as Sylphy to him and collaborates with him and Hilde on the defensive Unit No. 2 armor. 397 465
• Nanahoshi — A fellow otherworlder associated with Hilde and Ranoa Magic University. Rudeus benefits from magical knowledge connected to her research, including a lighting spirit for illumination. 289 They share a connection to Japan, and he recognizes her face from the final moments of his previous life. 227 228
• Perugius — The Armored Dragon King and a Divine Rank summoning magician. Rudeus receives limited Summoning Magic instruction from him. When Rudeus seeks household help, Perugius proposes summoning a familiar and expresses interest in what mana reserves exceeding Laplace’s might produce. 502
• Hitogami — Initially an apparently helpful adviser whose guidance Rudeus credits with improving his travels and relationship with Ruijerd. Rudeus conceals their contact from Hilde and sometimes attributes the information to other sources. After learning of Hitogami’s efforts against Roxy and their child, he becomes a determined enemy of the Man-God and his apostles. 166 312 337 359 372 398
• Ariel Anemoi Asura — The Asuran princess whose party Rudeus joins after rescuing Sylphy. He serves as an escort during her dangerous journey toward the royal capital. 401 432
• Lucy Greyrat — Rudeus’s biological daughter with Sylphy. Sylphy entrusts her to Rudeus due to the dangers of the Asuran political struggle, and he agrees to raise her. Roxy also accepts Lucy as part of the family. 395 396 377 398
• Lara “Lala” Greyrat — Rudeus and Roxy’s daughter, born before his departure to pursue Sylphy. She and Lucy remain young enough to require extensive adult care when Eris’s pregnancy is confirmed. 399 502
• Unborn child with Eris — The family’s expected third child. Confirmation of the pregnancy prompts Rudeus to seek additional household help. 502
• North King Vita — A Hitogami-aligned North God Style opponent whom Rudeus initially forces to retreat with Lightning Magic and later kills with Qilin while escorting Ariel’s party. 403 427 428
• North Emperor Auber — A dangerous Hitogami apostle who ambushes Rudeus’s group, costs Rudeus an arm, and survives Qilin through preparations that include a lightning rod. He later fights Eris and Ghislaine while Rudeus battles Leda. 425 426 427 428 463 465
• Leda — The Water God who protects Darius’s carriage against Rudeus’s bombardment. Her swordsmanship neutralizes his spells and restricts his movement, while Unit No. 2 prevents her sustained assault from seriously injuring him. 463 465
• Darius — An opposing political figure whom Rudeus targets during the carriage battle. Explosive Rock Shell fragments strike his carriage, and Rudeus later identifies eliminating him as a necessary part of breaking the wider stalemate. 463 465

Story Role / Major Arcs

Early Magical Training

Rudeus’s self-taught magic reveals his exceptional aptitude, leading to Roxy’s employment and his eventual advancement to Water Saint-tier magic. 1 2 3 4 5 6 7 8

Friendship with Sylphy

He and Hilde defend Sylphy from bullies, after which Rudeus becomes her magic teacher and resolves the misunderstanding surrounding her gender. 9 10 11 12 13

First Monster Battle

Rudeus supports Hilde against a Terminate Boar with Mire, gaining his first experience in a real battle against a monster. 16 17

Departure for Boreas

Rudeus is sent to serve as Eris’s tutor, separating him from Sylphy and setting him on a path toward further independence and training. 18 19 20 21 22

Royal Capital Rescue

After being abducted alongside Eris, Rudeus reunites with Hilde in Royal Capital Arus. He helps infiltrate the traffickers’ routes, rescues Eris, faces his first killing, and disables the tracking collar threatening their escape. 36 37 38 39 40 41 42 43 44 45 46 47 48 49

Great Teleportation Incident

After arranging his future engagement with Eris, Rudeus is caught in a catastrophic mana anomaly. His attempt to save Eris from the descending pillar of light results in both of them being displaced and separated from their former lives. 97 98

Reunion and Ranoa Magic University

Rudeus obtains the Foresight Eye and later reunites with Roxy, Hilde, Eris, and Ruijerd. He continues his studies at Ranoa Magic University, where his reputation as Roxy’s Water Saint-class disciple and the adventurer Mire precedes him. 165 166 220

His initial journey to Sharia is also motivated by the hope of curing his impotence. At the university, he meets Nanahoshi and learns that she is a transported Japanese otherworlder rather than a reincarnator. 216 227 228

Labyrinth Expedition

Rudeus joins the effort to locate Roxy in a dangerous labyrinth, using high-powered earth and water magic against its monsters. The expedition’s dangers, including the Magic Stone Hydra, further expose the disparity between his own strength and Hilde’s. 242 254 257

Hilde’s apparent death leaves him isolated and consumed by guilt over his role in opposing her plan. Her eventual return overturns the loss he believed permanent, including the need for the cemetery plot he purchased. 266 280

Magic Research and Orsted

Seeking greater independence, Rudeus researches Gravity and Lightning Magic and develops aerial combat techniques. When Roxy falls ill, he attacks Orsted in anger and desperation, only to be defeated; their later exchange of intelligence reveals Hitogami’s efforts to prevent the Savior’s birth. 303 349 350 369 372 379

Hilde’s flight lessons and his observation of her mana flow supply the foundation for Gravity Magic, while his collaboration with Aisha turns his Lightning research into a subject of magical engineering. 328 349 350

Sylphy Revelation and Asura Conflict

Rudeus learns that Fitz is Sylphy after she has already fled Ranoa with Ariel following Luke’s murder. Devastated by the revelation and convinced that Hitogami’s apostles are responsible, he accepts responsibility for Lucy, reunites with Eris, and pursues Sylphy’s party. 395 396 397 398 399 400 401

He forces Vita to retreat during the rescue and confronts Sylphy over her concealed identity, beginning their reconciliation. Roxy’s acceptance of Lucy and support for the reunion enable him to pursue Sylphy without rejecting his existing family. 397 398 403

Asuran Escort and Apostles

After catching up to and rescuing Sylphy, Rudeus joins Ariel’s party as an escort to the Asuran royal capital. He loses an arm during Auber’s ambush but commands the group’s response, kills North King Vita with Qilin, and discovers that the North Emperor prepared a lightning rod to survive the attack. 425 426 427 428 Upon arriving in Asura, he shares intelligence with Hilde and learns of the Notos Family’s betrayal. 432

Armored Battle Against Leda

During the confrontation around Darius’s carriage, Rudeus uses armor-assisted flight, a rapid-fire Rock Shell weapon, and explosive fragmentation magic against Water God Leda. Her ability to cut through spells and maintain an overwhelming counterattack demonstrates the limits of his offensive power against elite swordsmanship. 463

Unit No. 2’s exceptional defense allows him to survive, but the battle depends on more than personal endurance. With his companions under pressure on separate fronts, Rudeus recognizes his role as the decisive factor in Hilde’s plan and prepares a massive lightning spell rather than waiting for Leda to tire. 465

Return to Sharia and Family Life

After the Asuran incident, Rudeus plans a prompt return to Roxy and their child. Sylphy and Eris subsequently settle into his home, establishing a household with three wives and two young daughters. Roxy’s girls’ night begins the process of building mutual understanding among the wives. 473 492 498

Eris’s pregnancy introduces the prospect of a third child and exposes the growing burden of childcare and housework. Rudeus seeks reliable household assistance, while Perugius proposes familiar summoning as a possible solution. 502

Trivia

• Rudeus and Hilde are twins, though he treats himself as the older sibling because he was born a few minutes earlier. 5
• He once tried to pass off wearing stolen underwear on his head as “Kamen Rider” cosplay. 8 9
• Despite his magical ability, he cannot perform chantless healing magic. 13
• His adventurer nickname is “Mire,” derived from his frequent and highly effective use of the spell of the same name. 220 369
• His childhood practice of mana control, including earth sculpting and experimental wind manipulation, later contributes to his ability to create Qilin. 427
• He has a tear mole beneath his left eye, resembling Paul’s, and is described as having a softer, more feminine appearance than his father. 166 174
• His finely crafted figurines include depictions of Ghislaine, Eris, Roxy, and a female version of himself. 93
• When told that a Savior is connected to him, he initially assumes that he himself has received the title; he is corrected that the prophecy concerns his child. 334
• In the alternate future recounted by Aisha in Hilde’s dream, Rudeus becomes duke of the Notos Family, marries Eris, takes Sylphy as a concubine, reaches Water Emperor-class, and later commands the Asuran Royal Magician Corps. These are developments of that alternate timeline, not confirmed advancements in his current life. 65