Shinji

Biodata

Feature	Value
Name	Shinji (慎二)
Alias(es)	Shinji Matou; Shinji Kudou; Shinichi; Gong Teng; Mr. Anri; Espada Shinji Miyato
Gender	Male
Occupation/Role	Onmyoji-in-training; businessman; detective under the Shinji Kudou identity; teacher and mentor in later worlds
First Appearance	2

Power Progression

Stage / Realm / Level	Chapter	Notes
Secret Onmyoji training	2	Trains through the Dog System’s daily quests to gain the power to protect himself and Sakura.
Spiritual Wisdom Soul, final refinement	198	Nears completion of his second soul’s refinement; expects combat strength comparable to that used to instantly kill Zouken with a three-stage trial card.
Spirit Tempering, Third Stage	200	Completes the final Spirit Tempering round; gains materially usable mental power for detection and attacks, especially effective against spirits.
Doubled-cell body adaptation	205	Receives a body-cell doubling gift; adapts through extended travel and swimming, reaching water-running speeds above 90 km/h.
Sage Mode	370	Learns a Sage Mode based on natural energy rather than the three great hermitages.
Angra Mainyu imitation, full power	457	Activates strengthened instincts, pseudo-Mage Circuits, and a high-quality imitation of Angra Mainyu’s abilities.
Approaching Mind Fusion Realm	472	Has fewer than five years of lifespan remaining; must break through from Spirit Tempering Stage Seven to Mind Fusion Realm.

Background / History

Shinji grew up in the Matou household alongside his adopted sister Sakura. While Sakura endured the Matou family’s “training,” Shinji deliberately acted cold toward her so his grandfather could not use their relationship against them. Privately, he endured extreme System-directed physical training and pursued Onmyoji arts to protect them both. 2

Over the following years, he attended Hohzuki Academy, routinely skipped lessons, learned swordsmanship from Taiga Fujimura, and completed three months of ascetic training at Ryuudou Temple. He also took over stock investments and established a holding company, becoming financially successful while still a student. 10

During the Fuyuki Holy Grail War, Shinji confronted Zouken, destroyed his insect body, and used soul-binding barriers and materialized sword shadows to defeat him. Sakura, manipulated by Zouken, stabbed Shinji from behind, but Shinji healed himself and reassured her that he would explain later. 28

After Zouken’s defeat, Shinji worked with Kariya Matou to protect Sakura and conceal Zouken’s disappearance. He acquired a fully documented detective identity, Shinji Kudou, to operate openly in Fuyuki while avoiding attention during the war. 147 151

Shinji later crossed into multiple worlds, repeatedly taking on roles as a strategist, researcher, teacher, and overwhelmingly powerful combatant. His actions include researching souls and sealing techniques, controlling the Ten-Tails, training Karin, Haku, Kimimaro, and Toneri, and confronting threats ranging from Servants to Ōtsutsuki and demon gods. 225 374 481 492

Appearance

Shinji is described as having blue hair and later grows to a height of 1.73 meters. 2 10

• Uses disguises and alternate identities when necessary.
• As Shinji Kudou, wears a coffee-colored striped suit, light shirt, black leather shoes, detective hat, rosewood cane, and carries a wooden case. 151
• During his confrontation with the Ninja World, his body becomes covered in dark-red patterns resembling Mr. Anri’s attire. 532
• His physical condition later deteriorates severely: his right eye fails, his body loses strength, fragments fall from him, and his skin becomes rock-like. 538 539

Personality

Shinji is calculating, playful, and often deliberately provocative. He teases allies and enemies alike, adopts fabricated personas when advantageous, and prefers to manipulate a situation rather than meet it directly. His confidence can become arrogance; after suspecting that Chiyou had orchestrated his path from the beginning, he reacts with intense frustration at having been controlled. 151 415 468

Despite his flippancy, he consistently acts to protect people he considers his responsibility. His early training is driven by a desire to protect Sakura, he intervenes for Mitsuzuri, saves Tsunade from assassins, and repeatedly mentors or shelters younger characters. 2 87 207 481

He is also strongly independent. Shinji rejects Kariya’s offer of help during the Holy Grail War, considers most assistance a liability in battle, and frequently pursues dangerous research or missions alone. 151

Abilities & Skills

Onmyoji Arts and Spiritual Cultivation

Shinji cultivates spiritual power through System quests, meditation, soul refinement, and Spirit Tempering.

• Can use mental power for detection and materialized attacks after reaching Spirit Tempering’s third stage. 200
• Possesses multiple souls, including the Spiritual Wisdom Soul. 198
• Can refine and complete damaged souls using natural, unpolluted Mana. 137
• Claims he can recreate the Holy Grail System. 137

Soul Manipulation

Shinji possesses advanced knowledge of souls, spiritual cores, and personality separation.

• Completed the world’s first personality-detachment surgery using Justicia’s remnants and underground ley-line power. 156
• Reconstructed Zaid’s spiritual core, separating him from Hassan of the Hundred Faces. 156
• Can bind souls with barriers. 28
• Investigates the nature of souls, the Pure Land, and Impure World Reincarnation. 215

Sword Shadows

Shinji can materialize luminous sword shadows with binding properties.

• Pins physical targets in place with innumerable swords. 28
• Uses barriers and sword shadows together to restrain both body and soul. 28
• His dark sword shadows can pin Demon God Pillars and Gaeia to the ground. 473

Healing and Survival

Shinji can recover from otherwise lethal injuries and employ unusual methods of survival.

• Heals after Sakura stabs him from behind. 28
• Survives a direct clash with Gilgamesh’s Enuma Elish only through a spiritual-body substitute and a concealed main body. 362
• Uses clones and spiritual bodies as combat tools. 307 362 464

Presence Concealment

Shinji can suppress his physical signs and merge his presence with his surroundings.

• Conceals body heat, energy, breathing, and presence while observing the Tohsaka residence. 152
• Adjusts his breathing to match the wind and hides within it. 152
• Recognizes Sasaki Kojiro’s concealment because it follows a principle similar to his own. 62

Space-Time Techniques

Shinji uses several forms of dimensional movement and concealment.

• Uses Kamui to follow targets, hide in another dimension, and relocate the Ten-Tails. 373 374
• Combines enhanced Flying Thunder God markers with Kamui to return to shifting coordinates. 374
• Teleports through mirror worlds with Ruby. 191

Sealing and Artifact Crafting

Shinji researches sealing arts, artifact forging, and dangerous magical tools.

• Spends half a year researching sealing jutsu and the Death God’s mask. 225
• Imbues the Death God’s power into his second King’s Decree Sword. 225
• Masters intermediate array compilation and artifact forging. 200
• Places Spiritual Energy Bombs around Zouken’s Brain Worm. 147

Combat Skill

Shinji combines physical training, swordsmanship, tactical analysis, and overwhelming supernatural power.

• Learns swordsmanship under Taiga Fujimura. 10
• Defeats Berserker using the Archer Queen Character Card, consuming two of its three charges. 147
• Defeats a corrupted Rider using her Class Card. 191
• Beheads the Fourth Mizukage Hoshigaki in a single strike. 352
• Defeats Mōryō with ease and later controls the Ten-Tails through his Rinnegan. 230 374

Equipment / Weapons / Items

• Simei — miniature peachwood sword empowered by Shinji’s Life Force against Gilgamesh. 134
• King’s Decree Sword — Shinji’s second sword is imbued with the Death God’s power. 225
• Archer Queen Character Card — used to defeat Berserker; has three charges, two expended in the battle. 147
• Rider Class Card — used to defeat corrupted Rider and later studied in Shinji’s basement. 191 192
• Hades’ Invisibility Hat — an invisibility tool Shinji avoids using near Gilgamesh out of caution. 152
• System Space — stores documents, scrolls, tools, and other items. 151 215
• Death God’s Mask — a research subject and medium connected to the Death God’s power. 215 225
• Jewel Sword — researched and later modified with a spatial ring. 478

Relationships

• Sakura Matou — adopted sister; Shinji’s earliest motivation for seeking power is to protect her from the Matou household. 2 28
• Rider — Servant and frequent sparring partner; initially distrustful of Shinji, later receives her separated Spirit Origin and a physical body from him. 28 181 292
• Shirou Emiya — friend and classmate; Shinji calls himself a “Partner of Justice” and later works with Shirou on school projects. 6 181
• Rin Tohsaka — classmate and mage; recognizes Shinji’s strategic ability, later receives access to selected Humanity’s Way techniques from him. 87 478
• Kariya Matou — uncle from a parallel world; helps Shinji protect Sakura and establish the Shinji Kudou identity. 147 151
• Taiga Fujimura — swordsmanship teacher who regularly pursues Shinji over his truancy. 10
• Issei Ryuudou / Isshin Ryuudou — friends connected to Ryuudou Temple; Issei once had a close relationship with Shinji before becoming one of the people who disciplined him at school. 10 62
• Gilgamesh — rival and occasional observer; Shinji confronts him directly with Simei and later receives a Golden Apple from him. 134 137
• Karin, Haku, Kimimaro, and Toneri — Shinji’s disciples; he subjects them to harsh training while hoping for their growth. 481 504
• Xuan Nü and Qingyi — companions in the ancient Shenzhou arc; both develop affection for Shinji. 468
• Tsunade — initially frustrated by Shinji’s behavior; he later saves her from assassination. 207
• Chiyou — enemy Shinji believes may have manipulated his entire involvement in the Shenzhou crisis for an unknowable purpose. 468

Story Role / Major Arcs

Matou Household and Early Training

Shinji endures System-driven physical training while secretly cultivating Onmyoji power. He keeps Sakura at emotional distance to prevent Zouken from exploiting their bond. 2

Fuyuki Holy Grail War

He destroys Zouken, protects Sakura, confronts Servants and Masters, briefly dies after exhausting his Life Force against Gilgamesh, and returns amid revelations about his soul and abilities. 28 134 137

Mirror World and Spirit Tempering

Shinji gathers Class Cards, enters the mirror world, defeats a corrupted Rider, and advances to the third stage of Spirit Tempering. 191 200

Ninja World Operations

Shinji researches sealing techniques, gains White Zetsu allies, defeats Mōryō, trains disciples, manipulates Akatsuki-related events, acquires the Ten-Tails, and confronts Ōtsutsuki-level threats. 225 230 374 398

Shenzhou and Mesopotamia

After being summoned into an ancient divine era, Shinji travels with Nü Ba and Xuan Nü, fights Chiyou, and later concludes that Chiyou may have engineered the entire conflict around him. 406 463 468

Later World-Hopping

Shinji continues entering merged and alternate worlds, taking roles as a schoolteacher, researcher, mentor, and self-appointed problem solver while pursuing control over worlds, time, causality, and the System’s eventual separation. 567 578 596

Trivia

• Shinji’s System claims to be his grandfather from many lifetimes ago. 2
• He habitually skips classes despite Taiga Fujimura and Issei Ryuudou’s attempts to discipline him. 10
• He judges Rider’s movements through her chest rather than her eyes or limbs. 28
• He considers himself a “Partner of Justice,” though his methods are frequently manipulative or ruthless. 6 473
• He gave White Zetsu individuals human names after agreeing to help them regain their identities and memories. 231