Rudeus

Biodata

Feature	Information
Name	Rudeus Greyrat (鲁迪乌斯)
Alias(es)	“Rudeus the Reincarnated”
Species/Race	Human
Gender	Male
Affiliation	Greyrat family; House Boreas Greyrat (household tutor)
Occupation/Role	Chantless magic student; Eris Boreas Greyrat’s reading and arithmetic tutor
Status	Active
First Appearance	Chapter 115

Power Progression

Stage / Realm / Level	Chapter	Notes
Chantless Intermediate Water Magic	143	Demonstrates Water Cannon without chanting during Cain’s assessment, confirming exceptional magical aptitude.
Chantless Intermediate Healing Magic	147	Masters Intermediate Healing Magic without chanting after training under Cain.
Advanced-class Mage	151	Successfully casts the Advanced-class Compound Magic Frost Nova at age three after a month of instruction.
Advanced-class Chantless Casting	157	Masters most Advanced-class magic, Chantless Advanced Detoxification Magic, and chantless Frost Nova; continues struggling with Advanced Healing Magic.

Background / History

Rudeus is a reincarnated person: although born as Paul and Zenith Greyrat’s son, he retains the memories and mindset of a shut-in adult from another life. His past was marked by severe bullying, isolation, and an unfulfilled resolve to live properly if given another chance. As an infant, he witnesses Cain Brand Reiback effortlessly defeat Paul and concludes that the Sword God is someone he must never antagonize 115.

Paul later asks Cain to evaluate Rudeus’s unusual ability to cast magic without chants. Though Rudeus initially fears and envies Cain, Cain confirms that he can cast Intermediate-class Water Cannon chantlessly and agrees to guide him while staying in Buena Village 141 143.

Witnessing Cain’s chantless Frost Nova—a spell whose restrained range still freezes over 250 meters of grassland—shatters Rudeus’s confidence but teaches him humility. He abandons his attempt to compete with Cain and sincerely asks for magical instruction 144.

After a month of training, Rudeus casts Frost Nova himself and becomes an Advanced-class mage at three years old. Cain’s and Eris’s support during his earlier composite-magic attempt gives Rudeus a renewed feeling of warmth and companionship 150 151.

Rudeus later works to overcome the social anxiety rooted in his previous life. With Cain and Roxy accompanying and protecting him outside the family home, he begins to navigate Buena Village, eventually meeting and befriending Sylphiette 158 161 164.

He eventually travels to House Boreas Greyrat as Eris’s private tutor, intending to earn money for Sylphiette’s future Magic University tuition. Cain permits the arrangement only under strict supervision and with Eris’s safety as the priority 172.

Appearance

Rudeus is a small blond-haired boy during his early magical training and first meetings with Sylphiette 162 163.

• Blond hair 162 163
• Young enough to struggle with the weight of Cain’s Wrathful Fire Dragon King Staff at age three 150
• Often carries or studies magic books during training 146 147

Personality

Rudeus is intelligent, observant, and highly aware of threats despite his young body. His previous life’s trauma leaves him fearful of eye contact, crowds, and being outside, but he gradually chooses to face those fears rather than retreat from them 158 161.

He begins his relationship with Cain through fear, jealousy, and prejudice, resenting Cain’s strength, companions, and apparent success. Cain’s magic and patient guidance eventually earn his admiration, humility, and trust 143 144.

Rudeus is diligent once committed to magic, quickly learning spells that normally require far more time. He also has persistent lecherous tendencies, causing Cain to closely monitor his interactions with Eris and repeatedly stress responsibility toward any girl he pursues 147 157 172.

Abilities & Skills

Chantless Casting

Rudeus can cast several forms of magic without reciting their chants, a rare talent that Cain identifies as exceptionally promising 143.

• Casts Intermediate-class Water Cannon without chanting 143.
• Learns Chantless Beginner Healing Magic and Intermediate Detoxification Magic during Cain’s month-long stay 151.
• Masters chantless Intermediate Healing Magic 147.
• Later gains chantless Advanced Detoxification Magic and chantless Frost Nova 157.
• Cannot immediately use every spell chantlessly; Advanced Healing Magic requires practical experience and an understanding of bodily changes 146 157.

Water and Compound Magic

Rudeus’s magical specialty is demonstrated primarily through water magic and compound spells.

• Creates Water Vapor while using the Wrathful Fire Dragon King Staff 150.
• Casts Frost Nova, combining Water Vapor with Frozen Domain, to freeze a forty-meter area 150 151.
• His Frost Nova is powerful for his age but lacks Cain’s range and output 151.

Mana Capacity

Rudeus possesses unusually large mana reserves, which Cain observes through Ghislaine’s Magic Eye 150.

• Had already been practicing the method Cain teaches for expanding mana capacity 150.
• Is considered a magical prodigy with the potential to become an extraordinary mage 143 151.
• His mana reserves remain below Cain’s own, whose abilities are enhanced by a system 150.

Limitations

• Has no aptitude for swordsmanship; Battle Aura is rejected by his body and cannot enter or be sensed by him 150.
• Is physically very young, making heavy magical equipment difficult to handle 150.
• His social anxiety can become debilitating when outside or reminded of past-life bullying 161.

Relationships

• Cain Brand Reiback — Senior, magical mentor, and protector. Rudeus initially fears and envies Cain, but comes to respect him after witnessing Frost Nova and receiving patient instruction 143 151.
• Paul Greyrat — Father. Paul requests Cain’s help training Rudeus and later secures Rudeus’s tutoring position at House Boreas 141 143 172.
• Zenith Greyrat — Mother. She refuses to send the very young Rudeus away to Fittoa, prompting Cain to remain in Buena Village temporarily to teach him 143.
• Roxy Migurdia — Cain’s partner and a supportive adult figure. She helps Rudeus confront his fear of going outside and reassures him that she will protect him 158 161.
• Eris Boreas Greyrat — Cain’s disciple and later Rudeus’s literacy student. Rudeus is intimidated by her combat ability; she accepts him as tutor only because Cain approves 172.
• Sylphiette — Friend whom Rudeus meets after helping defend her from bullying. He wants to earn money to support her future tuition at Magic University 162 164 172.
• Ghislaine Dedoldia — Accompanies Cain’s group during Rudeus’s training and later escorts Rudeus to House Boreas for his tutoring appointment 143 172.

Story Role / Major Arcs

Buena Village Training

Cain assesses Rudeus’s chantless casting, recognizes his magical potential, and teaches him Beginner and Intermediate magic, healing and detoxification casting, mana expansion, and compound magic 143 151.

Rudeus’s most significant achievement during this period is his successful Frost Nova, which establishes him as an Advanced-class mage at age three 151.

Overcoming Social Anxiety

Rudeus asks Cain to accompany him outside the village home because of his difficulty facing people. Cain and Roxy provide protection and emotional support, allowing him to take his first meaningful steps outside and begin interacting with others again 158 161.

Meeting Sylphiette

While exploring Buena Village with Cain, Rudeus sees Sylphiette being bullied. With Cain backing him up, he intervenes, helps clean her up, and forms a friendship with her 162 164.

Household Tutor of Eris

Rudeus becomes Eris’s private tutor in reading and arithmetic to earn money for Sylphiette’s education. Cain allows him near Eris only under close supervision, maintaining that Eris may defend herself against any improper behavior 172.

Notable Quotes

“Teacher Cain, please teach me magic! I beg you!” 144

“Thank you...” 150

“I’ll use all my ability and treat Sylphiette seriously!” 164