Yamei

Biodata

Feature	Information
Name	Hyakawa Yamei (夜明)
Alias(es)	Lord Yamei; Divine Sovereign of the Land of Waves
Species/Race	Human; transmigrator
Gender	Male
Affiliation	Formerly Konohagakure; Land of Waves; Imperial Federation
Occupation/Role	Ninja; founder and leader of the Land of Waves; President of the Federation
Status	Active
First Appearance	Chapter 1

Power Progression

Stage / Realm / Level	Chapter	Notes
Kage-level chakra reserves	3	The Sea of Derivations integrates his acquired chakra materials; three Chunin-equivalent portions combine into chakra reserves stated to be at Kage level.
Hyakawa Bloodline	5	Names his derived composite bloodline after combining acquired bloodline materials and builds it around the principle of “embracing all rivers.”
Pink Two-Tomoe Sharingan	7	Integrating Hyuga bloodline power mutates the Hyakawa Bloodline, awakening pink eyes with two tomoe, chakra-pathway vision, and enhanced dynamic vision.
Mangekyo Sharingan and Byakugan	20	His status lists both Mangekyo and Byakugan as Kekkei Genkai; he continues collecting Mangekyo dōjutsu such as Kotoamatsukami.
Eternal Mangekyo Sharingan	90	Integrating Senju bloodline power evolves his Mangekyo into Eternal Mangekyo and enables a Susanoo over two hundred meters tall.
Rinnegan / Six-Tomoe Rinnegan	173, 210	The Rinnegan grants Truth-Seeking Orbs and Space-Time Barrier; his later status identifies his dōjutsu as Six-Tomoe Rinnegan.
Longevity Art	250	Fuses multiple regenerative and life-energy arts into three internal seas of energy that replenish themselves from many energy types and grant boundless lifespan.
Tenseigan–Rinnegan fusion	273	His Byakugan completes its evolution into the Tenseigan and fuses with the Rinnegan, granting Tenseigan Chakra Mode and techniques such as Golden Wheel Reincarnation Explosion.

Background

Yamei was a transmigrator who died by electrocution after spilling water on his computer. He arrived in the ninja world with the Sea of Derivations and Magic Hand as his “cheat” abilities. His parents later died during the Nine-Tails’ attack, leaving him a house and sufficient money; because they had been friends with Shinku Yūhi, Kurenai’s family cared for him afterward. 1

He began acquiring ninja materials through handshakes, particularly from Kurenai, and used the Sea of Derivations to turn those materials into usable techniques. Under Kurenai’s training plan, he developed his genjutsu, taijutsu, chakra control, and basic ninjutsu at an exceptional pace. 1 3

After integrating Uchiha, Hyuga, and other bloodline materials, he named his central techniques the Mist Veil Moon, Art of a Hundred Refinements, Hundred Rivers Sword Style, and Hyakawa Bloodline. He adopted “Hyakawa”—“hundred rivers”—as a name representing his goal of gathering the strengths of many paths. 5

Appearance

Yamei is a black-haired young man with distinctive pink eyes. His unusual ocular appearance becomes increasingly pronounced as his dōjutsu evolve. 7 152 273

• Pink pupils originally bearing two tomoe after his first bloodline mutation. 7
• Later manifests Mangekyo, Rinnegan, and Tenseigan-derived eye forms. 20 173 273
• Described as notably handsome even as a child. 6

Personality

Yamei is confident, blunt, and openly self-assured. During Team 8’s introductions, he stated that he liked pretty girls, hated hard work, and dreamed of ruling the world, immediately unsettling his teammates and Kurenai. 30

His apparent laziness does not extend to collecting or developing abilities. He is intensely curious about bloodlines, forbidden techniques, dōjutsu, and scientific research, repeatedly using the Sea of Derivations to combine disparate powers into stronger forms. 5 110 210

He values personal freedom and rejects authority that would limit him. When Tsunade offered him the position of Konoha’s Junior Elder, he refused in favor of remaining a rogue ninja. 109 Despite his manipulative and provocative tendencies, he repeatedly supports people in crisis, including Uchiha survivors, Kurama Yakumo, Shion, Naruto, and the inhabitants of the nations absorbed into his Federation. 24 98 152 255

Abilities & Skills

Sea of Derivations

The Sea of Derivations analyzes materials acquired through Magic Hand and derives stronger, more compatible techniques, bloodlines, and composite abilities. Once a material is integrated, its knowledge and power become part of Yamei’s own strength. 1 3

• Can merge related techniques into named derivative arts, including Mist Veil Moon, Art of a Hundred Refinements, Hundred Rivers Sword Style, and Myriad Gods Seal. 5 24
• Requires analysis time; major integrations can take from hours to multiple days. 1 12 245
• Generates a personal status panel cataloguing his attributes, techniques, and bloodlines. 13

Magic Hand

Magic Hand obtains materials from a person whose hand Yamei touches or shakes. Acquired materials include chakra, nature transformations, clan techniques, bloodline power, dōjutsu, and even fragments of physical abilities. 1 2 121 187

• Acquired Uchiha techniques, Sharingan-related power, Hyuga bloodline power, Scorch Release, Ice Style, Lava Release, Kaguya bloodline power, and Kamui through repeated encounters. 3 6 24 27 121 128 187
• Petty Theft can trigger as a side effect, producing an item carried by the touched person; his first documented trigger stole half a box of Asuma’s cigarettes. 2
• Mind Blank can also trigger as a side effect and has caused abnormal reactions in several targets. 19 72

Hyakawa Bloodline and Dōjutsu

Yamei’s composite Hyakawa Bloodline incorporates and mutates acquired bloodline materials. It provides the foundation for his unusually high chakra, vitality, recovery, Yin–Yang balance, and ocular power. 5 90

• His Hyuga-derived perception lets him see chakra circulation and observe through physical obstructions. 7 91
• His Mangekyo-derived powers include Kotoamatsukami, Tsukuyomi-based genjutsu principles, Susanoo, and Kamui. 12 51 90 187
• The complete Kamui grants intangibility, spatial movement, long-range distortion, and a separate Kamui-like space. 187
• His Rinnegan permits Truth-Seeking Orbs without relying on the Ten-Tails and grants Space-Time Barrier, which can reduce or halt time flow in a limited area. 173
• His Tenseigan–Rinnegan fusion grants Tenseigan Chakra Mode, Six Paths: Chibaku Tensei, and Golden Wheel Reincarnation Explosion. 273

Mist Veil Moon

Mist Veil Moon is Yamei’s central genjutsu, derived from Kurenai’s genjutsu materials and repeatedly strengthened through additional techniques and dōjutsu. 1 3

• Combines illusion, binding, phantasmal effects, and offensive applications. 3
• Incorporates Kotoamatsukami and Tsukuyomi-derived effects, allowing it to alter perceptions, torment souls, and manifest a target’s deepest fears. 51 96
• Can be deployed over a wide area; Yamei used it to investigate the genjutsu disturbance affecting Konoha. 96
• His later Illusionary Void Solidification can condense imagined constructs into reality, but attempting to merge an imagined world with reality caused dangerous large-scale phenomena. 101

Art of a Hundred Refinements

The Art of a Hundred Refinements is Yamei’s composite taijutsu, built by integrating multiple martial styles rather than relying on a single school. 5

• Incorporates Gentle Fist, Konoha-style taijutsu, Strong Fist principles, the Eight Inner Gates, and other acquired styles. 6 24 48 58
• Initially limited to opening the Fourth Gate because of his physical condition; later opens the Sixth Gate against Utakata. 24 133
• Combines with Shikotsumyaku to turn his body into a close-combat weapon covered in bone spurs. 121 133

Hundred Rivers Sword Style

A derived sword art designed to gather the strengths of many sword schools. 5

• Draws from Uchiha swordsmanship, Konoha styles, and Shisui’s Body Flicker Blade Technique. 3 56 110
• Lets Yamei contend with multiple Root operatives through swordsmanship and close combat. 56

Sealing, Space, and Medical Arts

Yamei possesses extensive support and utility techniques alongside his combat abilities.

• Myriad Gods Seal — a fusion of the Four Symbols Seal and Eight Trigrams Seal with enhanced sealing power; used to seal reincarnated ninja. 24 208
• Mount Sumeru Divine Realm — a derived space technique developed from Flying Thunder God and Kamui principles. 187 188 210
• Resurrection — a medical technique derived through healing-related analysis and combined with his Source of Life. 51
• Longevity Art — grants three inexhaustible internal energy seas, absorbs many forms of energy, amplifies power, and removes normal lifespan limits. 250

Elemental and Kekkei Genkai Control

Yamei possesses all seven chakra attributes and has accumulated a wide range of elemental bloodlines. 13 210

• Demonstrated Kekkei Genkai include Scorch Release, Ice Style, Wood Release, Gold Release, Shikotsumyaku, Lava Release, Boil Style, Crystal Style, Dust Release, Magnet Release, Explosion Release, and Storm Release. 210
• Can create colossal ice dragons through Ice Style: Mysterious Ice Dragon Soar. 77
• Uses Wood Release Sage techniques, including Sage Art, Wood Release, True Several Thousand Hands: Simplified. 230
• Began fusing his elemental ninjutsu and related bloodlines into a broader elemental-control ability rather than maintaining them as separate techniques. 210

Summons and Constructs

• Mōryō — tamed by Yamei after the Land of Demons crisis and used as an intimidating chakra beast. 159 243
• Shadow Legion — troops created from his Shadow Technique and Illusionary Void Solidification. 101
• Soul Clones — clones infused with his soul, allowing them to wield Magic Hand independently. 282

Relationships

• Yūhi Kurenai — Childhood caretaker, mentor, neighbor, and eventual mutual love interest. She trained him, worried over his safety, and later acknowledged her feelings for him. 1 3 162
• Uchiha Shisui — Trusted ally and the Land of Waves’ Divine Envoy. Shisui implemented Yamei’s reforms, oversees major affairs, and remains one of his strongest supporters. 3 24 25
• Uchiha Sasuke — Protégé, ally, and frequent sparring partner. Yamei guides Sasuke’s training and helps reunite him with Mikoto and the surviving Uchiha. 110 122 123
• Uchiha Mikoto and Uchiha Izumi — Uchiha survivors protected by Yamei after the massacre; both later assist in the Land of Waves and Federation. 22 24 25
• Pakura — Land of Waves Divine Envoy who offers Yamei her service out of gratitude and becomes a trusted political and personal ally. 24 25
• Uzumaki Karin — Ally whose Mind’s Eye of the Kagura enhances Yamei’s Empathic Mark; she is determined to grow stronger for his cause. 27
• Uzumaki Naruto — Friend who trusts Yamei even when Yamei decides to remove the Nine-Tails from him. 6 255
• Tsunade — Medical mentor and political counterpart. They exchange gambling instruction for medical training, and she later attempts to recruit him as Konoha’s Junior Elder. 90 91 109
• Kurama Yakumo — Yamei exposes Ido as the manifestation of her hatred, guides her through confronting it, and offers to help her pursue becoming a ninja. 98
• Shion — Miko of the Land of Demons who seeks Yamei’s aid against Mōryō; after the crisis, she accompanies him to the Land of Waves. 152 159 160
• Orochimaru — Research partner kept under Yamei’s control. Orochimaru researches Yamei’s blood in exchange for sharing results and techniques. 121 195
• Nagato — Ally whom Yamei saves from Obito’s attempt to seize the Rinnegan. 184

Story Role / Major Arcs

• Konoha prodigy — Begins as a Kurenai-trained child in Konoha, rapidly builds a composite arsenal through Magic Hand and the Sea of Derivations, and enters the Ninja Academy alongside the Konoha 11. 1 3 9 10
• Uchiha preservation — Opposes the destruction of the Uchiha bloodline, saves Izumi and Mikoto from the massacre’s aftermath, and shelters surviving Uchiha children. 14 22 24
• Land of Waves ruler — Learns that Shisui’s reforms have made him the revered Divine Sovereign of the Land of Waves, then begins directing its diplomacy, development, military, and social policy. 24 25 26
• Break with Konoha — Resists Danzō’s attempt to seize the Source of Life, defeats Root operatives, retrieves Asura’s chakra, and leaves Konoha as a rogue ninja. 56 67
• Federation expansion — Builds alliances and absorbs smaller nations, including the Land of Demons and the Land of Water, while positioning the Land of Waves as the center of a wider Federation. 160 191
• Six Paths ascension — Acquires the Rinnegan, complete Kamui, Longevity Art, advanced Senjutsu, and the Tenseigan–Rinnegan fusion while preparing for Otsutsuki threats. 173 187 250 259 273
• Unification of the ninja world — Consolidates political and military power, establishes new laws and five Great Legions, and oversees a year of prosperity after the world’s unification. 279
• Evil God battle — Fights the Evil God for twenty-four hours, destroys its source with a captured pearl, and absorbs its power into the Ancestral Tree. 283

Trivia

• Yamei’s name “Hyakawa” and several signature arts follow the same “hundred rivers” motif: gathering diverse strengths into one greater whole. 5
• He first discovers that the Sea of Derivations can display a status panel in Chapter 13. 13
• His first documented Petty Theft trigger produces half a box of Asuma’s cigarettes rather than a ninja tool or technique. 2