William

Biodata

Feature	Detail
Name	William Spengler 97 100
Alias	“Swift Thunder”; Battle Mage; Spirit King of Aldikia; Heavenly Motion of All Phenomena; Moon Star Spirit 190 616
Species	Human originally; later transformed into a Star Spirit 434
Gender	Male 233
Affiliation	Loki Familia; ruler of Aldikia and the Island of Gen'ei 99 616 679
Status	Alive 233
First Appearance	Chapter 97 97

Background

William Spengler originated in the world of The Irregular at Magic High School, where he spent sixteen years studying magic and Kudo-style Ancient Martial Arts before arriving in Orario 97 101. Although physically comparable to an ordinary human before receiving a Falna, his pre-existing magic could annihilate Level 5 monsters and potentially affect weaker Level 6 monsters; his strategic-class magic was considered capable of destroying even a Level 7 enhanced species 97. He adopted his original name, William Spengler, upon entering Orario and sought admission to a powerful Familia rather than building up a weak organization from scratch 97.

After demonstrating his strength against a Level 2 Loki Familia gatekeeper, William joined the Loki Familia and received Loki's Divine Blessing 98 99. His Falna revealed anomalous magical growth and the Skill “Ability Assimilation,” which enabled him to retain magic from his previous world after his Psions had vanished 100 101. Under Finn Deimne and Riveria Ljos Alf, he developed his spear techniques and magical aptitude, rapidly becoming one of Orario’s most exceptional adventurers 102 111.

William's meteoric rise—leveling to Level 2 in just over twenty days—drew the attention of gods and adventurers alike 150. He later acquired Artemis's moonlight blessing, became a Moon Star Spirit, and reached Level 4 before leaving Orario to travel across worlds using the Book of Worlds 229 230. During his travels, he pursued the power of the Primal Mana Stone, cultivated Star Power, and eventually transformed his race into that of a Star Spirit 231 434.

• Proved his strength to the Loki Familia gatekeeper in a spar, gaining entry despite lacking a Blessing 98.
• Received his Divine Blessing, revealing the unique “Ability Assimilation” Skill that allowed him to retain and use magic from his previous world 101.
• Became a disciple of Finn Deimne for spear techniques and Riveria Ljos Alf for magic, formalizing his training in Orario 102 111.
• Reached the 10th Floor on his first day in the Dungeon and recorded unprecedented initial Status growth 112.
• Defeated the Goliath on the 17th Floor and later fought the Black Pterosaur variant to accumulate the great feat necessary for advancement 114 122.
• Leveled up to Level 2 in only twenty days, causing an uproar across Orario 126 150.
• Defeated Udaeus alone using spear techniques, daggers, Thunderstorm, and Thunder Beasts 149.
• Created a Magecraft tool capable of preserving divine blood’s Status-updating effect for two days 185.
• Encountered Artemis during the Great Tree Sea expedition and subsequently received the Blessing of the Moon Goddess 190 229.
• Departed Orario for the first time, stepping through a gate between worlds and using the Book of Worlds to select his next destination 230.
• Visited the world of The Asterisk War, cultivated Star Power, and pursued the Primal Mana Stone on the moon 231 307 351 375.
• Fought Fan Xinglu, developed further control over Star Power, and became capable of using moonlight-enhanced combat abilities against high-level Genestella 235 239.
• Transformed into a Star Spirit by fusing his will with a moon-origin entity through the Book of Worlds 434.
• Became the Spirit King of Aldikia and established authority over the Island of Gen'ei 439 616.
• Subjugated or incorporated major organizations, including the Lion King Agency, MAR, the Library, and mage families from the world of The Irregular at Magic High School 548 627 679.
• Activated the Holy Annihilation ritual, using his knowledge to transform it into a world-altering spell that expanded the Island of Gen'ei by over a thousand times 692.

Power Progression

Level	Key Stats	Development Abilities	Skills
Lv.1 (Initial)	- Strength: I(0) - Endurance: I(0) - Dexterity: I(0) - Agility: I(0) - Magic: I(3) — An anomalous starting value, as all other stats began at 0. 101 112	None	- “Mana Adaptive Growth”: Requires no training; automatically operates until the body's limit is reached. - “Child of Lightning Elements”: When using lightning-attribute magic, magic power is automatically increased by 30%. - “Ability Assimilation”: Capable of unifying learned techniques and abilities into a single system. This allowed William to use magic from his previous world (The Irregular at Magic High School) through his new mana. 101
Lv.1 (Growth, Pre-Update)	- Strength: I(0) → G(207) - Endurance: I(0) → G(275) - Dexterity: I(0) → D(504) - Agility: I(0) → D(566) - Magic: I(3) → B(750) Note: This rapid growth was recorded after William's first day of delving, having reached the 10th Floor. Loki noted this was an “absurd increase.” 112	None	Unchanged from Lv.1 Initial.
Lv.2 (After Promotion from Lv.1)	- Strength: S(901) → I(0) - Endurance: S(902) → I(0) - Dexterity: SS(1499) → I(0) - Agility: SS(1499) → I(0) - Magic: SSS(1999) → I(0) Note: All stats reset to zero upon leveling up. The pre-level-up values represent William's peak growth at Lv.1, exceeding standard S-rank limits. 127	- “Mystery”: An ultra-rare ability that appeared automatically alongside the chosen development ability. It is not determined by combat ability. - “Harmonization”: A Development Ability chosen by William, surprising Loki due to its rarity. He selected this over other offered abilities as a practical, long-term decision. 126 127	- “Mana Adaptive Growth” — Unchanged. - “Child of Lightning Elements” — Unchanged. - “Ability Assimilation” — Unchanged. - Magic: “Lightning Magic” (No chant required, abilities develop freely); “Celestial Crusade” (Ultra-long chant wide-area annihilation magic); “Thunderbolt Fangs” (Chant: Thunderstorm! / Pierce!) — An attack magic that resembles Ais's wind magic. 127
Lv.3 (After Promotion from Lv.2)	- Strength: S(900) → I(0) - Endurance: S(908) → I(0) - Dexterity: SS(1499) → I(0) - Agility: SS(1499) → I(0) - Magic: SSS(1999) → I(0) Note: Stats reset again upon leveling up. The pre-level-up values again exceeded S-rank, with Magic reaching SSS. 159	- “Mystery I” — Unchanged from Lv.2. - “Harmonization I” — Unchanged from Lv.2. - “Magic Breaker I” — Chosen by William at Lv.3 promotion. He felt this ability paired best with his auxiliary magic and would provide the greatest boost to his combat power, selecting it over “Magecraft” and “Lancer.” 159	- “Mana Adaptive Growth” — Unchanged. - “Child of Lightning Elements” — Unchanged. - “Ability Assimilation” — Unchanged. - “One-Man Army”: A new Skill gained upon promotion. The more enemies faced, the faster the recovery rate of all stats. - Magic: [Three magics are omitted from record]. 159
Lv.4 (Recorded Status)	- Strength: H(115) - Endurance: H(103) - Dexterity: H(198) - Agility: G(208) - Magic: S(903) 229	- “Mystery H” - “Harmonization H” - “Magic Breaker I” - “Magecraft I” 229	- “Mana Adaptive Growth” — Unchanged. - “Child of Lightning Elements” — Unchanged. - “Ability Assimilation” — Unchanged. - “One-Man Army” — Unchanged. - “Blessing of the Moon Goddess”: Can mobilize moonlight; triples normal abilities and recovery speed while fighting under moonlight. 229

Abilities and Powers

Divine Blessing

Upon receiving a deity’s Blessing, William’s Status displayed the five basic ability parameters—Strength, Endurance, Dexterity, Agility, and Magic—all starting at I(0) except for a single anomaly: his Magic stat already showed three points at the initial activation 101. After every level-up, these stats reset to zero, though all accumulated bonuses from Skills and development abilities remain intact 127 159. William’s combat style—relying on agile footwork, decisive strikes, and magical bombardment—causes his Magic, Agility, and Dexterity to grow most rapidly, often reaching SS or SSS ranks before a level-up 113. The Blessing limits an adventurer to a maximum of three magic slots, a rule William circumvents through his unique Skill “Ability Assimilation,” which allows him to use magic from his previous world through mana 101.

• Status Anomalies: William’s Magic stat began at 3 rather than 0, an unprecedented occurrence that puzzled even his patron deity Loki 101.
• Stat Growth Pattern: His highest-ranked stats are consistently Magic, Agility, and Dexterity, reflecting his combat methodology; Strength and Endurance grow more slowly 113.
• Reset on Level-Up: All base stats revert to I(0) upon leveling up, but development abilities and magic remain unchanged 127.
• Magic Slot Limitation: By world rules, only three types of magic can be learned; William’s “Ability Assimilation” effectively bypasses this restriction by converting non-native magical systems into usable spells 101.
• Level 4 Status: By the time he received Artemis’s moonlight blessing, William had attained Level 4, with Magic at S(903) and Magecraft added to his development abilities 229.

Star Spirit Physiology

The Book of Worlds later offered William a method to transcend his original human race. By abandoning his former body, merging his will with a blank-slate entity representing the moon’s origin, and reshaping himself, William became a Star Spirit 434. This transformation forms the basis of his later identity as the Moon Star Spirit and greatly expanded his spiritual power and potential 434 616.

• Star Spirit Transformation: William fused with an entity described as the embodiment of the moon’s will and remade his body as a Star Spirit 434.
• Spiritual Power: His spiritual power was subsequently assessed as being comparable to that of the vampire Progenitors, placing him among the powers nations could not afford to provoke 439.
• Divine-Energy Superiority: William can wield pure divine energy capable of reducing lower-grade magic to primitive particles of light upon contact 577.

Development Abilities

Development abilities are selected upon leveling up, with three options presented based on the adventurer’s combat history. William’s choices have been consistently pragmatic, favoring long-term utility over immediate power. He possesses the rare “Mystery” ability, which appears automatically alongside his chosen development ability and is typically only held by a handful of adventurers in Orario 126 159.

• Harmonization: An ability commonly found in pharmaceutical-focused Familias; William chose it to accelerate his knowledge of potion-making and create a magic item capable of updating his own Status 126.

  • Applications: Enhances proficiency in crafting magic items and pharmaceuticals; synergizes with “Mystery” to potentially rival divine craftsmanship 126.
  • Limitations: Offers no direct combat benefit, which led Loki to question its selection over “Magecraft” 126.

• Mystery: An ultra-rare ability that manifests automatically when the chosen development ability qualifies; it enables the crafting of magic items and is considered a path toward matching the gods 126 159.

  • Applications: Unlocks the potential to create powerful artifacts; appeared within “Harmonization,” indicating high talent in magical crafting 126.
  • Limitations: Does not appear among the three selectable options at level-up; requires the correct base ability to trigger 126.

• Magic Breaker: Selected at level 3 for its compatibility with William’s auxiliary magic and aggressive combat style 159.

  • Applications: Provides a significant boost to combat power, especially when paired with supportive magic 159.
  • Limitations: Supersedes “Magecraft” and “Lancer” as the best direct combat option at that time 159.

• Magecraft: Appeared as an option at level 2 alongside “Spearman” and “Harmonization”; focuses on enhancing magical abilities 126.

  • Applications: William later obtained Magecraft I by Level 4, further supporting his magical-item research and spell development 229.
  • Limitations: Passed over at his Level 2 promotion in favor of “Harmonization” for long-term crafting goals 126.

• Lancer / Spearman: A combat-oriented development ability that appeared at both level 2 and level 3; William chose not to take it at either level-up 126 159.

  • Applications: Enhances spear-fighting techniques and associated stats 126.
  • Limitations: Inferior to “Magic Breaker” for William’s hybrid combat style 159.

Magic

William’s magic arsenal is dominated by lightning-attribute spells, empowered by his Skill “Child of Lightning Elements.” He can cast any lightning-type spell without incantation, and his unique “Ability Assimilation” allows him to use spells from the world of The Irregular at Magic High School through mana instead of Psions 101 109. At level 2 his three magic slots filled with “Lightning Magic,” “Celestial Crusade,” and “Thunderbolt Fangs” 127. His lightning also possesses a disintegration property that destroys the elemental composition of opposing magic on contact 128.

• Lightning Magic (Chantless): A flexible spell that requires no incantation and adapts to the user’s intent 101.

  • Applications: Can be used at will for rapid strikes or sustained bombardment; when combined with “Thunderbolt Fangs” it coats weapons and the body in lightning 127.
  • Limitations: At initial discovery, the amplification effect on weapons was not very obvious 127.

• Celestial Crusade: Described as ultra-long-chant wide-area annihilation magic 101 127.

  • Applications: Designed for massive scale destruction, capable of wiping out large monster swarms; William employed its full version against the Black Pterosaur variant and a monster horde while still at Level 1 122.
  • Limitations: Requires a very long incantation and substantial mana reserves 101 122.

• Thunderbolt Fangs: Chant-based spells that include “Thunderstorm!” and “Pierce!” 127.

  • Applications: “Pierce!” penetrates armored defenses, as demonstrated against Udaeus’s hand 148; “Thunderstorm” summons a devastating area lightning storm 149 286.
  • Limitations: Chant demands concentration, though William can shorten it or cast them silently due to his chantless ability 109.

• Thunderstorm: William’s signature high-cost spell; it consumes nearly all his magic power and can transmute lightning into Thunder Beasts that attack independently 121 149.

  • Applications: Annihilated a swarm of Level 1 scorpion monsters and ravaged the landscape around the Elsos ruins 197; also used to generate Thunder Beasts that overwhelm enemies 121.
  • Limitations: Extremely mana-draining, requiring precious Spirit Potions to recover 121; environmental damage is severe 197.

• Collapse Magic (Armor Form): A magic derived from the Irregular world that William can manifest as an armor-like state 237.

  • Applications: Provides absolute defense against magic and enhances physical abilities beyond “Swift Thunder Chasing Fang” 237.
  • Limitations: Cannot be maintained indefinitely due to intense Star Power consumption 237; transformation speed was initially too slow for combat use 245.

• Blazing Divine Domain: A high-level lightning spell cast without chant 109.

  • Applications: Instantly incinerated a swarm of Killer Ants, clearing a path in the Dungeon 109.
  • Limitations: Not detailed further, but similar in power to his other lightning magic.

• Spatial Magic: William later developed advanced spatial Magecraft, including long-range space shifting and the ability to tear open spatial rifts 471 477 554.

  • Applications: Transported Zaharias and the Hungui unit to an unknown island; bypassed normal travel by entering a rift directly to the tenth level beneath the Cornerstone Gate 477 554.
  • Limitations: Powerful magical barriers can ordinarily interfere with spatial traversal, though William has demonstrated methods of bypassing such restrictions 554.

• Phantom Step Kill: Phantom Image: A deceptive movement and assassination technique that leaves a false image for enemies to strike 271 335.

  • Applications: Allowed William to evade Moritz’s attacks and kill an assassin threatening Kirin 271 335.
  • Limitations: Its precise operating conditions are not fully explained.

Skills

William’s Status includes several unique Skills that enhance his growth, combat prowess, and versatility. These Skills are permanent and do not require training to maintain.

• Mana Adaptive Growth: Automatically operates without training, increasing William’s magical capacity and efficiency up to the limits of his body’s endurance 101 159.

  • Applications: Passively raises his effective mana pool over time, enabling him to cast more powerful or frequent spells.
  • Limitations: The growth ceiling is bounded by his physical and level-based endurance.

• Child of Lightning Elements: A permanent 30% boost to the power of all lightning-attribute magic 101 159.

  • Applications: Directly amplifies every lightning spell William casts, making them significantly more destructive.
  • Limitations: Only affects lightning magic; other elemental magic does not receive the bonus.

• Ability Assimilation: Unifies learned techniques and abilities from different systems into a single cohesive framework 101 159.

  • Applications: Allows William to use magic from The Irregular at Magic High School world, including Collapse magic, through mana instead of Psions 101 237. It also supports his integration of Star Power, Magecraft, and other world-specific systems.
  • Limitations: Requires conscious integration; certain high-level techniques may still need adaptation.

• One-Man Army: The more enemies William faces simultaneously, the faster his stats—Strength, Endurance, Dexterity, Agility, and Magic—recover 159.

  • Applications: Sustains prolonged combat against large numbers of foes by accelerating stat regeneration.
  • Limitations: Not effective in one-on-one duels; recovery bonus scales with enemy count.

• Blessing of the Moon Goddess: Grants the ability to mobilize the power of moonlight 229.

  • Applications: Triples normal combat abilities and recovery speed when fighting under moonlight; also enables the use of “Orion’s Arrow” and “Scorpion Shot” as a Moon Star Spirit 229 461.
  • Limitations: Effectiveness depends on moonlight availability; may be weaker or inactive during other times.

Star Power and Domain

After traveling to The Asterisk War world, William learned to absorb and cultivate Prana as Star Power 231. His control later developed into a domain capable of manipulating ambient Prana in the atmosphere, ground, and surrounding environment 285.

• Prana Manipulation: William can sense, absorb, and control Prana, including the flow of Star Power within other individuals 231 348.
• Domain Control: His Star Power can dominate atmospheric and terrestrial Prana, allowing him to overwhelm enemies within the affected area 285.
• Lightning Immunity: William can withstand lightning attacks without injury, a trait demonstrated during his spar with Zhao Hufeng and Cecily 262.
• Extreme Physical Speed: By stacking physical, Star Power, and speed-based enhancements, William crossed twenty meters at a speed described as exceeding teleportation 276.

Equipment

William wields a divine artifact named “Orion” (also called “Orion’s Arrow”), a bow and spear that possess conceptual abilities and can transform between forms. This weapon was originally a silver bow and later manifested as a blood-jade spear or a silver-gray blade inscribed with divine runes 206 214 245 246. Additionally, he uses a Lux-type weapon with a gun-blade component that is not composed of Prana, resembling an Immortal Artifact from the “Ten Thousand Radiant Heavens” lineage 297.

• Orion / Orion’s Arrow (Divine Artifact):

  • Nature: A congenital divine artifact capable of shifting between bow, spear, and sword forms; etched with glowing, faint runes similar to those on William’s Status 245 246.
  • Applications:
    • Piercing of All Things: The arrow fired from Orion has a “must-hit” property—once launched, the target cannot dodge unless they can survive the impact or possess resurrection abilities 214.
    • Scorpion Shot: An ultimate move that requires being a Moon Star Spirit; it channels immense spiritual power to sink the earth 461.
    • Close-Combat Form: As a spear, it can deliver devastating thrusts; as a blade (“Orion”) it matches top-tier sword techniques 206 246.
  • Limitations:
    • Transformation speed in combat was initially too slow to be practical 245.
    • The must-hit concept requires sufficient power to overcome the target’s durability; if a target can tank the spear, it is ineffective 214.
    • Requires moonlight or the “Blessing of the Moon Goddess” to unlock full potential 229 461.

• Immortal Artifact (Gun-Blade):

  • Nature: A weapon that rivals mainstream Luxes in Asterisk, constructed with Manaite and possessing special abilities akin to those of the first “Ten Thousand Radiant Heavens” 297.
  • Applications: Fires condensed energy blades and bullets; provides a versatile option against a variety of opponents 297.
  • Limitations: Details on its unique ability are not fully disclosed; it may require Star Power to operate.

Relationships

Loki

The relationship between William and Loki is multifaceted, blending genuine familial care with a deity’s possessive delight in a rare treasure. From the moment William arrived at the Familia, Loki was protective, warning him that she considered her Familia “equivalent to family” and demanded mutual trust 99. She quickly showed a maternal side—offering to cover the shortfall for his magic workshop from public funds, though with the condition that his creations be sold internally 136. Loki also negotiated a treaty whereby William would cover her drinking expenses once he had money, a sign of her playful opportunism 104. Despite her occasional crudeness—such as sexually harassing Lefiya—Loki’s anger at William’s unexplained absence in Chapter 638 revealed her growing attachment. She later orchestrated the acquisition of Haruhime for the Familia via a War Game, demonstrating her ruthless protectiveness 178. Loki is openly thrilled by William’s potential, calling him a “jackpot” after seeing his Falna and skills 176, and she is shown to be reasonable when it comes to her “child,” even forgiving his mistake about her gender 104.

• “Once the ritual is performed, you are a member of our Loki Familia. I don't care about other Familias, but mine is equivalent to family.” 99
• Loki offered to cover the workshop shortfall from Familia public funds, but required William to sell magic items to the Familia at an internal price 136.
• After William’s absence, Loki was “absolutely furious,” hinting at her deep concern 638.
• Upon learning of Haruhime’s power, Loki leaped on William and exclaimed, “I’ve hit the jackpot again!” 176

Finn

Finn, the captain of the Loki Familia, takes on the role of mentor and strategic supporter for William. He eagerly teaches William spear techniques, addressing him as “Master” and establishing a formal mentorship 102. Finn is consistently impressed by William’s potential, seeing him as a future cornerstone of the Familia’s strength. He collaborates with Loki to plan William’s development—ensuring he retains melee capability while also focusing on magic 102. Finn also mediates practical matters, such as giving William the funding authorization for the workshop 136. Finn’s attitude toward William is one of enthusiastic encouragement; he welcomes the virtuous cycle of growth that William brings, much like the earlier arrival of Ais and others 102. He shows genuine relief when William safely leads the battle on the 50th floor 155.

• Finn’s eyes lit up as he considered William’s potential: “the stronger the Familia members, the more powerful their party becomes” 102.
• Finn granted William the funding authorization for the magic workshop 136.
• During the Dungeon expedition, Finn was relieved to find his Familia members unharmed after William took command 155.
• Haruhime’s Blessing of the Fox empowered Finn to the point that he believed he could contend with Ottar in a one-on-one battle 175.

Riveria

Riveria, the elven mage of the Loki Familia, becomes William’s magic mentor after Gareth suggests the arrangement 111. She is initially impressed by his humility when he declines a reward of a Great Holy Tree branch for helping Lefiya, and she agrees to teach him magic daily 111 112. Riveria shows maternal concern for William’s growth, wanting to guide him carefully so he does not stray 112. She trusts his judgment on the battlefield, following his commands during the worm monster crisis 155. Riveria also uses William to motivate Lefiya, requesting that he demonstrate his chantless magic to spur Lefiya’s development 105. She is part of the leadership that observes William’s romantic entanglements with approval, noting that high-caliber adventurers produce exceptional offspring 183.

• Riveria’s face showed a faint smile when William agreed to be her disciple: “she had already intended to teach him magic herself” 112.
• She asked William to “demonstrate your chantless magic for Lefiya” to motivate her 105.
• On the 50th floor, Riveria trusted William’s orders and used ice magic to buy time 155.

Ais

Ais, the Sword Princess, forms a quiet but deep bond with William, marked by mutual support and shared goals. She accompanies him to update his status with Loki, showing a straightforward trust that surprises even Loki 125. Ais works closely with William in the Dungeon, covering retreats and fighting alongside him 155. Riveria notes with emotion that Ais, who had buried many knots in her heart, called out to William for help—a sign that William has reached her in a way others could not 131. Ais is also part of the group that brings Haruhime into the Familia, showing her willingness to follow William’s lead in matters beyond combat 175. Despite her primary pursuit of strength, she grows comfortable enough to casually grip William’s arm without fully understanding social graces 125.

• “No, it’s William!” Ais answered when Riveria asked who helped her 131.
• Ais and William went together to Loki to update his status—Loki felt she “ought to have a word with Riveria about teaching Ais social graces” 125.
• In the Dungeon, Ais left Lefiya to Tiona’s care and continued fighting, trusting William’s coordination 155.

Lefiya

Lefiya, the young elf mage, serves as William’s first guide in the Dungeon and later becomes a fellow student of Riveria’s magic. She is kind-hearted and professional, forgiving William’s tardiness and showing respect for his abilities 105. Lefiya is also the target of Loki’s frequent sexual harassment, which William initially questions as inappropriate, though he later becomes accustomed to the Familia’s dynamics 103. She is tasked with leading William on his first exploration and is awestruck when he demonstrates chantless magic 105 106. Over time, she falls under the infatuation that many female Familia members develop for William due to his divine appearance 638.

• Lefiya guided William on his first Dungeon exploration and explained his situation to Eina 106.
• She shrieked when Loki groped her, but the Familia members were indifferent 103.
• Later, Lefiya is one of the women who are infatuated with William’s enhanced looks 638.

Alicia

Alicia, the lead mage of the second division, treats William like a beloved younger brother. She is described as gentle, beautiful, and generous, lacking elven arrogance, and is popular among the Familia’s men 136. She coordinates funding for William’s magic workshop, commissions Goibniu for its construction, and later agrees to have dinner with him, indicating a growing friendship 139. Alicia shows a hint of melancholy when she thinks about William possibly leaving the second team soon, as she herself has been stuck at Level 4 for years 141. She promises to take care of him during the Dungeon expedition, saying “this sister will take good care of you” 141.

• Alicia interacted with William over tea, revealing that Riveria had given her the tea 136.
• She commissioned Goibniu to build the workshop and kept William’s Mystery possession a secret 139.
• “I’ll be counting on you to look after me during the expedition, Alicia!” – “Mm, this sister will take good care of you when the time comes.” 141

Haruhime

Haruhime, the renart, becomes utterly devoted to William after he rescues her from Ishtar. She expresses desire to bear his children and serve him, and William struggles with his own desires around her while maintaining composure 175. She joins the Loki Familia after demonstrating her powerful “Blessing of the Fox” ability, and William and Ais work together to bring her in 175. Haruhime takes care of William and the Familia, studies under Riveria, and is eager to become William’s concubine 178 638. Their reunion after William’s journey is marked by an embrace, showing her emotional attachment 638.

• Haruhime thought: “And then, I’ll bear William-sama two children!” 175
• She is dedicated to serving William, taking care of him and the Familia 178.
• In Chapter 638, she embraces William upon his return, expressing joy at seeing him again 638.

Kirin Toudou

Kirin is a young swordswoman from The Asterisk War world who shares a close and trusting relationship with William. William personally collected her from the airport for the Phoenix Festa and later protected her from Koichiro Toudou and hostile assassins 262 310 335. Kirin retains William’s teachings closely and has developed her swordsmanship through training and battle 309.

• Kirin was visibly excited to reunite with William when he collected her at the airport 262.
• William intervened when Koichiro Toudou harassed Kirin at a restaurant 310.
• Kirin fought beside William against black-clad assailants at Le Wolfe Black Academy’s festival 332 333.
• William killed an assassin threatening Kirin with “Phantom Step Kill: Phantom Image” 335.

Kishiryu Yukina

Kishiryu Yukina becomes one of William’s personal attendants after his rise as Spirit King of the Island of Gen'ei. Initially an agent of the Lion King Agency, she served as an intermediary between William and the organization before it came under his authority 539 548 554.

• Yukina arranged the Lion King Agency’s audience with William on behalf of her master, Yuantangyuan 539.
• William intended to use the Lion King Agency’s Spirit Sword Shamans as frontline forces and its Dancing Priestesses as specialist assassins against Magecraft criminals 548.
• Yukina later accompanied William and Kozuki Sayaka as one of his personal Kiwai 554.

The Wider Familia

Beyond the main characters, William enjoys close ties with many members of the Loki Familia. The Familia treats its members as family, and this ethos is reinforced by the leadership 99 112. William’s divine appearance later causes widespread infatuation among the women—Elves, humans, and beastkin alike—who envy Haruhime’s position as his concubine 638. Even two Level 2 gatekeepers address Loki by name without honorifics, reflecting the Familia’s casual atmosphere 638. The senior executives—Finn, Gareth, and Riveria—actively encourage William’s romantic connections with Ais, Alicia, and Haruhime, seeing it as a way to forge inseparable bonds and produce superior offspring 183.

• The gatekeepers called their deity by name directly, unlike other Familias 638.
• Female members say things like: “I also want to be Lord William’s concubine and be all lovey-dovey with him every day.” 638
• Finn and Gareth observed William’s romantic entanglements positively, thinking “this is actually a good thing” 183.

Equipment

Item Name	Type	Description	Abilities
Orion / Orion’s Arrow	Divine Artifact	A congenital divine artifact able to change between bow, spear, and blade forms; its surfaces bear glowing divine runes. 245 246	Fires conceptually unavoidable arrows through Piercing of All Things; supports Scorpion Shot for William as a Moon Star Spirit; serves as a high-level close-combat spear or sword. 206 214 461
Orga Lux	Magic Weapon	A weapon powered by a Manaite core that contains a massive amount of energy and possesses a consciousness-like existence.	Has a temperament and personal preferences; the cost of use varies—some Orga Lux have a very low cost or even effectively none at all 368.
Immortal Artifact (Gun-Blade)	Magic Weapon	A Manaite-based gun-blade resembling an Immortal Artifact from the “Ten Thousand Radiant Heavens” lineage rather than a weapon composed of Prana. 297	Fires condensed energy blades and bullets, providing William with a versatile ranged and melee weapon option. 297