Simu

Biodata

Feature	Value
Name	Kamizuki Simu (司木)
Alias(es)	Simu; God Child; Lord Jashin's chief representative; “Head-Chopping Maniac” 2 9
Species/Race	Blood Pool; creator and ruler of the Jashin Race 3 24
Gender	Male
Affiliation	Jashin Cult
Occupation/Role	God Child; genetic researcher and creator of Jashin Race beings
Status	Active
First Appearance	Chapter 1

Power Progression

Stage / Realm / Level	Chapter	Notes
Level 1	3	Reincarnates as the Blood Pool beneath the Jashin Cult’s Divine Statue. Gains the Womb of the Primordial Creator, allowing him to devour creatures, analyze and combine genes, and create Jashin Race beings under his control. Starts with 500 Jashin Reputation; 2,000 is needed for the next level. 3
Level 2	37	The cult gains 6,436 reputation from the Sakamoto Trading Company and Yugakure incidents, bringing Simu to 7,207 reputation. His soul strength and mental power increase substantially, accelerating analysis of Jashin and ninja genes. The next level requires 10,000 reputation. 37

Background / History

Simu awakens in a black-purple underworld and meets Lord Jashin. When offered a choice between becoming a cult follower or suffering humiliation, he feigns devotion and promises to offer the entire Shinobi World to Jashin. Jashin grants him an Immortal Body, while postponing the promised Jashin Ritual. 1

He reincarnates as the Blood Pool beneath the Jashin Cult’s Divine Statue. His true body is the pool itself; the humanoid Simu encountered by others is a clone sustained by life energy. His immortality belongs to the Blood Pool rather than these disposable clones. 3

After defeating Hidan and absorbing his genetic material, Simu is accepted by the Cult Leader as a God Child. He immediately begins using the Womb of the Primordial Creator to analyze genes, cultivate Jashin Race variants, and expand his surveillance network around cult headquarters. 3 13

Following the destruction of the Sakamoto Trading Company and conflict with Yugakure ninja, Simu’s activities dramatically raise the cult’s reputation and advance his system to Level 2. He subsequently permits the Cult Leader to possess a clone body in order to study Living Corpse Reincarnation, surviving the soul attack due to his enhanced mental power. 37 39

After facing Orochimaru’s Snake Clone, Simu recovers its corpse for analysis. His later research yields broad ninja-gene categories, RC Cells, and a deeper understanding of chakra, allowing him to create and modify increasingly advanced Jashin Race organisms. 42 43 45 46

Appearance

Simu commonly manifests through a pale, black-haired humanoid clone with black-rimmed glasses. He usually appears composed and well dressed, often adjusting his glasses before making a cutting remark or using an ability. 2 42

• Pale complexion and black hair pressed against his skin after emerging from the Blood Pool. 2
• Black-rimmed glasses, a habitual part of his appearance and mannerisms. 2 42
• His true form is a temple Blood Pool rather than a human body. 3
• Can manifest insectoid Kagune, black exoskeleton armor, spider silk, and steel-feathered wings from his clone body. 7 12 23 42

Personality

Simu is observant, calculating, and intensely curious. Entering an unfamiliar world, he prioritizes gathering intelligence about chakra, ninjutsu, politics, and the Shinobi World’s hidden history before acting openly. 8 9

He is manipulative and pragmatic. His outward loyalty to Jashin is entwined with his desire to gain resources, reputation, and freedom to develop the Jashin Race. He uses Hidan, cult sacrifices, and outside conflicts as opportunities for research and expansion. 10 13 37

Simu does not consider himself human and explicitly rejects human moral expectations. He can recognize courage in people such as Shiraishi Mori, but he refuses to save others merely because he has the power to do so, instead viewing crises as opportunities to observe change, collect data, or provoke evolution. 3 34 35 36

His fascination with unknown phenomena can override caution. Rather than retreating from dangerous research subjects such as Orochimaru’s techniques, RC Cells, or natural energy, he studies them directly—even amputating his own petrified hand with little concern after testing natural energy. 43 45 50

Abilities & Skills

Womb of the Primordial Creator

Simu’s central system ability allows his Blood Pool body to devour living creatures, analyze their genes and abilities, combine genetic traits, and create new Jashin Race beings that naturally obey him. 3

• Creates humanoid clones, Kagune, Ravens, Black Beetles, ninja-derived organisms, and other engineered lifeforms. 13 37 45
• Can reproduce ninja bodies and grant elemental chakra traits by grafting relevant genetic segments. 45 46
• Requires energy; large-scale production can drain his reserves and consume life force. 13
• His Immortal Body lets him endure this cost so long as Jashin has not fallen. 13 37

Immortal Body

Jashin’s blessing makes Simu effectively immortal while Jashin remains alive. The blessing is tied to Simu’s true Blood Pool body, not necessarily to individual clones. 1 3 37

• Regenerates severe damage to his manifested body, including deep wounds inflicted by Orochimaru’s Wind Cutter Technique. 42
• Allows him to use life force aggressively for mass creation without permanent death. 13
• Clone bodies remain expendable and can be replaced with new life energy. 3

Kagune

Simu describes his Kagune as inherited parts of Jashin’s physical form. They serve as his primary weapons, defenses, and biological tools. 7

• Weihe: Centipede — A massive, bladed centipede tail growing from his spine. 7
• Rinkaku: Mantis — Sharp scarlet mantis-like limbs capable of rapidly severing opponents. 3 7
• Koukaku: Spider — Eight spider-like appendages that produce silk, including silk used to bind Hidan or stitch wounds. 7 23
• Koukaku: Ant-Man — Hardened exoskeleton armor capable of withstanding blades and explosions. 12
• Ukaku: Sword Raven — Steel-feathered wings that form enormous blade-like weapons; they slice Orochimaru’s serpent body in half. 42
• RC Cell-based Kakuhou later replace earlier Kagune positions and allow manifestations to be shaped by Simu’s will. 45

Reconnaissance and Swarm Control

Simu controls specially created Ravens and Black Beetles as extensions of his senses and will. 13

• Ravens share vision with Simu and serve as long-range scouts or mass distractions. 13
• Black Beetles possess sensory ability, devour prey, transport corpses, store energy, and can be mass-produced. 13 37 49
• He covertly replaced the crows around Jashin Cult headquarters and spread beetles through rooms, trees, and soil, effectively monitoring the area. 13 38
• Uses Ravens and beetles to survey a twenty-kilometer area after Orochimaru’s clone is defeated. 43

Genetic and Chakra Research

Simu develops his abilities through direct genetic analysis and experimentation rather than conventional training. 45 46

• Analyzes ninja genes for Fire, Water, Lightning, Earth, and Wind Release. 45
• Determines that elemental chakra affinities depend on specific genetic segments that can be cultivated, activated, and transplanted. 46
• Modifies Hidan to refine all five elemental chakra types and use Simu’s ninjutsu. 46
• Discovers RC Cells, mutations in which Kagune become integrated into a host’s body under extreme emotional stimulation. 45

Engineered Creatures

• Raven — Vision-sharing reconnaissance organism. 13
• Black Beetle — Energy-storing scout, corpse transporter, and combat swarm organism. 13 49
• Explosive Bug — A living explosive containing the formula for a Kibaku Fuda; Simu uses them to melt through a steel gate with “Bug Release: Great Character Explosion Technique.” 49
• Evil-Faced Ghost Snake — A composite creature made from ninja, Kagune, and snake genes; it possesses armor, Ukaku deployment, an Evil Ghost Mask, and the Heart of the Five Elements. 46

Relationships

• Lord Jashin — Patron and source of Simu’s Immortal Body. Simu professes the goal of offering the entire Shinobi World to Jashin, though he also exploits Jashin’s power to fuel his own creations. 1 13 46
• Hidan — Fellow God Child, rival, experimental subject, and recurring target of Simu’s decapitations. Simu dominates their relationship, but Hidan is fiercely attached to him and attacks the Cult Leader after believing Simu has been killed. 3 7 39 40
• Jashin Cult Leader — Nominal superior who accepts Simu as a God Child, then attempts to seize his powers through Living Corpse Reincarnation. Simu knowingly allows the possession attempt to study the technique. 3 38 39
• Shiraishi Mori — A Ghoul whose emotional mutation into RC Cells becomes Simu’s most valuable research result. Simu recognizes Mori’s courage but treats his suffering and transformation as experimental data. 34 35 45
• Chairman Sakamoto — Businessman and Ghoul client whom Simu supplies with Kagune. Simu later defeats him effortlessly and recovers his remains for research. 23 24 34 37
• Orochimaru — Enemy and mutual object of scientific interest. Orochimaru seeks Simu as a test subject, while Simu studies Orochimaru’s Snake Clone, Wind Release, snake genes, and body-transfer technique. 42 43 45
• Kikuchi Miura — Jashin Cult ninja whose precise Water Release techniques introduce Simu to practical ninja combat. Miura’s genes later contribute to Simu’s Water Release research. 18 37

Story Role / Major Arcs

Jashin Cult Arrival

Simu gains Jashin’s blessing, reincarnates as the Blood Pool, defeats Hidan, and becomes a God Child within the Jashin Cult. He establishes himself as a dangerous and independent force inside the organization. 1 3 7

Cult Expansion and Surveillance

Over three months, Simu upgrades the initial Kagune and creates Ravens and Black Beetles to monitor the cult headquarters and its surroundings. He pursues reputation growth to advance the Raising Game system. 11 13 14

Sakamoto Trading Company Incident

Simu and Hidan travel to Shuiyu Village and board Sakamoto’s ship. Simu introduces Kagune as a means to create Ghouls, creating the conditions for Sakamoto’s ambitions and Shiraishi Mori’s eventual transformation. 20 23 24

Ghoul Experiments and Level Up

Simu watches rather than prevents the conflicts surrounding Mori and Sakamoto, collecting the biological results afterward. The resulting massacre and public attention raise the Jashin Cult to Level 2. 35 36 37

Cult Leader’s Betrayal

When the Cult Leader uses Living Corpse Reincarnation to seize a Simu clone, Simu lets the attempt proceed for research purposes. Hidan mistakes the possession for Simu’s death and massacres the Jashin Cult in retaliation. 38 39 40

Orochimaru Research

Simu repels Orochimaru’s Snake Clone with Ravens, Kagune, armor, regeneration, and Sword Raven. He then recovers the clone to expand his knowledge of Wind Release, snake genes, and body-transfer techniques. 42 43 45

Orochimaru’s Laboratory

Simu and Hidan enter Orochimaru’s laboratory, where Simu obtains research data on chakra-nature alteration and Artificial Sage Mode. He restrains Subject Zero after she absorbs natural energy, then tests the volatile energy through Black Beetles and his own body. 49 50

Trivia

• Simu’s true body is the Blood Pool beneath the Jashin Cult’s Divine Statue, while his humanoid forms are clones. 3
• Cult members call him the “Head-Chopping Maniac” because of his repeated decapitation of Hidan. 9
• He considers Hidan’s Jashin Ritual strategically useful, despite finding Hidan himself unintelligent and reckless. 2 6
• Simu’s research into RC Cells leads him to conclude that emotion, will, and the soul can influence physical evolution in the Shinobi World. 45