Masayo

Biodata

Feature	Information
Name	Masayo (真夜)
Alias(es)	Ye Feiyu (used while stranded in the prehistoric era); “Belial” (cover identity for Gato’s death) 203 59
Species/Race	Human; later becomes immortal after mastering Yin–Yang Power 267
Gender	Male
Affiliation	Konohagakure; Team 12; later the Land of Night 45 248
Occupation/Role	Shinobi, former Ninja Academy physical-education teacher, Team 12 leader, Tsunade’s disciple, and later a ruler/supreme overseer of the Land of Night 17 45 99 248
Status	Alive 308
First Appearance	Chapter 2

Power Progression

Stage / Realm / Level	Chapter	Notes
Rasengan training	7	Mastered the rotation stage but initially struggled with irregular chakra rotation, refusing to rely on Shadow Clones as a shortcut.
Chunin	7	Passed Konoha’s internal assessment after a year of missions and training under Kakashi.
Miroku-enhanced Rasengan	13	Combined Miroku’s remaining spiritual energy with a Big Ball Rasengan to destroy Chi.
Yin–Yang Release fundamentals	18	After seven months of Shadow Clone-assisted training, grasped its fundamentals but could not yet actively wield it.
Spirit Transformation Jutsu	33	Copied the technique from the Scroll of Seals and began adapting it into original techniques.
Jonin	45	Promoted before assuming command of Team 12.
Chakra Wings research	60	Purchased the Mysterious Peacock Method’s complete theory and adapted its chakra-shaping principles for personal flight.
Spirit Transformation Seal	70	Developed a B-rank seal capable of suppressing soul-affecting seals; used it to suppress Sasuke’s Cursed Seal of Heaven.
Perfect Sage Mode of Shikkotsu Forest	109	Achieved Sage Mode after two days of training; blue hair and eyes mark the transformation.
Mastered Shikkotsu Senjutsu	110	Rapidly extended his Sage Mode proficiency over the following half-month, surpassing Tsunade’s speed while transformed.
Sustained Sage Mode and Toyoshigeshin	127	Used a Shadow Clone to store Senjutsu Chakra, extending Sage Mode and gaining the ability to reshape inorganic material into weapons.
Yin–Yang Power and immortality	267	Mastered Yin–Yang Power and attained immortality while preparing for Manjusaka’s descent.
Great Deity state	215	Reached an advanced Senjutsu form that grants free natural-energy control, flight without Chakra Wings, body regulation, and access to Body Activation and the Eight Gates.
Five Senses Genjutsu mastery	297	After transplanting Kurama Yakumo’s cells and mastering her Five Senses Genjutsu, was ranked the Ninja World’s strongest active fighter.

Background / History

Masayo possesses memories from a previous life, including knowledge of characters and events resembling the Ninja World’s future. He uses this knowledge to recognize altered events, though he repeatedly realizes that his own actions have produced a “butterfly effect” that makes the future unreliable 5 19.

During Kakashi’s altered Survival Trial, Masayo competed against Inoue Mura and Matsumoto Kei for a single bell. He was already a left-handed shinobi who kept a fully stocked ninja-tool pouch and approached the test as a direct contest rather than a teamwork exercise 2. After a year of missions and training under Kakashi, he became a Chunin 7.

His encounter with Miroku and Chi in Fishbeam Forest changed the direction of his growth. Miroku identified the unusual strength of his soul, temporarily merged her remaining energy with him, and directed him toward the hidden power connected to the forest 13 14. Masayo later dedicated himself to studying the Yin–Yang Release and Life Spirit he gained from that incident 17 18.

Appearance

Masayo is a black-haired shinobi who commonly carries the Light-Concealing Sword. After training in Shikkotsu Forest, his Sage Mode changes his hair and eyes blue; he later adopts a blue haori gifted by Katsuyu 162 109 110.

• Left-handed and carries his ninja tools on his left leg 2
• Wears a Konoha forehead protector when operating as a Konoha shinobi 60
• Uses a blue haori with violet star-like glimmers and black-trimmed sleeves as part of his combat attire 110
• Carries the transparent Light-Concealing Sword at his waist or on his back 29 110
• Sage Mode grants blue hair and blue eyes without animal-like features 110

Personality

Masayo is pragmatic, independent, and intensely self-directed. He values preparation, strength, information, and personal autonomy; he repeatedly rejects arrangements that would make him subordinate to either Konoha, a noble family, or a romantic partner 30 54 248. He is willing to deceive, steal, manipulate enemies, and exploit political weaknesses when he believes doing so protects his interests or the people he considers his own 59 107 116.

Despite his detachment, Masayo maintains a personal moral boundary. He protects vulnerable people such as Karin, challenges Yakumo’s desire for indiscriminate revenge, and treats friendship and gratitude as more meaningful than institutional loyalty 70 74 33. His admiration for Ultraman reflects his belief that strength should be restrained by a moral line, even while he rejects simplistic definitions of good and evil 112.

He is also meticulous and patient. His carving practice develops the concentration and chakra control that later allow him to master Shikkotsu Forest’s Sage Mode unusually quickly 66 109. In combat, he favors traps, clones, feints, terrain control, and hidden contingencies over direct exchanges of power 23 97 127.

Abilities & Skills

Wind Release

Masayo’s primary chakra affinity is Wind Release. He combines it with exceptional speed, sensory awareness, and weapon use.

• Wind Body Flicker — A high-speed movement technique that relies on speed rather than spatial coordinates; Hiruzen considers Masayo’s mastery among the greatest he has seen 37.
• Wind Sense — A self-created sensory technique used to detect people and monitor conversations at range 37 95.
• Wind Clone — A clone that disperses into a whirlwind when struck, useful for evasion and deception 23.
• Wind Cutter Technique — Severed Nadare Rōga’s enormous One-Horned White Whale despite being classified as a C-rank technique 23.
• Wind-enhanced swordplay — Channels Wind chakra through the Light-Concealing Sword to increase its cutting power 29 126.

Rasengan Techniques

Masayo trained extensively in the Rasengan and developed several increasingly destructive variants.

• Big Ball Rasengan — Used to shatter Nadare’s Chakra Armor after weakening it through repeated attacks 23.
• Super Chakra Big Ball Rasengan — A Miroku-enhanced Rasengan used to annihilate Chi 13.
• Spiraling Ring / Great Spiraling Ring — A Rasengan-derived technique linked to Yin–Yang Attributes; its explosive force was powerful enough to devastate the battlefield against Obito 52 127.
• Limit — His large-scale Rasengan and elemental techniques consume substantial chakra, especially before his body fully matures 23.

Elemental Ninjutsu

Masayo has demonstrated versatile use of multiple elemental transformations.

• Fire Release — Uses Great Fireball Technique as a lethal finishing move and combines Fire and Wind into Fire Dance Tornado or Fire Dance Whirlwind 23 97 212.
• Water Release — Created a wave hundreds of meters high through Water Shockwave by drawing on the surrounding sea; can also use water barriers defensively 23 127.
• Earth Release — Can produce an Earth-Style Wall for defense 127.
• Elemental combinations — His Fire Dance Tornado vaporized the Jonin Kazuma and his weapons 97.

Shadow Clones and Tactical Deception

Masayo uses Shadow Clones not only for training but as a core combat and operational tool.

• Used clones to attend his Academy position while his real body trained in secret 18.
• Deceived Snow Ninja with clones disguised as Neji and Rock Lee 22.
• Hid a final Shadow Clone as a contingency against Fūka, allowing it to strike her soul’s weakness after she believed she had exhausted his resources 97.
• Stores Senjutsu Chakra in concealed clones to extend Sage Mode beyond its normal duration 127.

Spirit Transformation and Soul Techniques

Masayo’s Spirit Transformation Jutsu is especially compatible with his abilities and became the basis for several specialized techniques.

• Spirit Transformation Seal — Suppresses soul-related seals and relieved Sasuke’s Cursed Seal pain, though it could not remove the seal entirely 70.
• Spirit Transformation Shock — Destroyed Mōryō’s soul completely, preventing his resurrection at significant chakra cost 176.
• Idō intervention — Took responsibility for confronting Kurama Yakumo’s alternate personality and helping her regain control of her own power 48 51.

Senjutsu

Masayo is the first known successful master of Shikkotsu Forest’s Senjutsu in its current era.

• Perfect Sage Mode — Uses a demanding 9:1:1 balance of natural, spiritual, and physical energy; excess natural energy can be absorbed by Katsuyu 109.
• Sage Mode enhancement — Greatly improves his speed, perception, durability, and Wind Body Flicker 110 126.
• Sage Art: Toyoshigeshin — Breaks apart and reshapes inorganic material, including earth, wood, and weapons, into projectiles 127.
• Great Deity state — A superior Senjutsu state that grants free natural-energy control, flight, bodily regulation, and access to Body Activation and the Eight Gates 215.

Medical Ninjutsu

Masayo possesses practical medical knowledge and can use the Mystical Palm Technique.

• Recognized simple medical conditions through his early study of medical ninjutsu 20.
• Treated his own broken ribs and severe wounds after fighting Fūka 97.
• Tsunade was impressed that he had learned the Mystical Palm Technique at his age, even though he described his grasp as basic 99.

Five Senses Genjutsu

By the postwar period, Masayo gains access to Kurama Yakumo’s Five Senses Genjutsu after transplanting her cells.

• The technique is regarded as exceptionally dangerous and powerful enough to draw Manjusaka’s interest 297.
• Its mastery contributes to Masayo being ranked first among the Ninja World’s active fighters 297.

Craftsmanship

Masayo is an accomplished sculptor whose discipline directly supports his chakra control.

• Carved a nineteen-layer Puzzle Ball that master sculptors responsible for Hokage Rock statues acknowledged as superior 37.
• Can carve words and images onto a grain of rice 66.
• Uses carved Puzzle Balls as meaningful gifts, including one given to Konan while she was disguised as Xiaobei 78.

Equipment / Weapons / Items

• Light-Concealing Sword — An invisible drawn blade made from meteorite fragments and chakra-conductive metal. It channels chakra and elemental techniques, creates a rainbow chakra barrier once per charge, recharges through sunlight in roughly an hour, and repairs itself by absorbing iron 29.
• Blue haori — A combat haori gifted by Katsuyu, decorated with violet star-like patterns and broad sleeves suitable for concealing tools 110.
• Storage scrolls — Carries extensive food, cooking supplies, toiletries, towels, and other mission necessities 129.
• Mutually Multiplying Explosive Tags — Copied from the Scroll of Seals; later considered combining them with Shadow Clones and Konan’s stolen arsenal 33 107.
• Explosive Tag arsenal — Secretly obtained Konan’s stockpile of approximately 120 billion Explosive Tags, which he keeps hidden with Hinata 107.
• Flying Thunder God kunai — Gives one to Konan so she can summon him during an emergency 237.
• Chakra-Powered Car — A red vehicle gifted by Koyuki that runs through chakra channeled into its clutch system 81.

Relationships

• Kakashi Hatake — Former supervising Jonin and trusted senior. Kakashi recommended Masayo for the Land of Snow mission and later accepted Masayo’s cover story for Gato’s death without exposing him 7 19 59.
• Hiruzen Sarutobi — Early patron and political supporter. Hiruzen entrusted Masayo with the Scroll of Seals, believed he had the potential to become Hokage, and valued his loyalty to friends over institutional loyalty 33.
• Tsunade — Master and political ally. Impressed by his medical talent and potential, Tsunade took him as her disciple and relied on him during Konoha’s internal power struggle 99 112.
• Katsuyu — Senjutsu teacher, healer, and close confidante. She supervised his Shikkotsu Forest training, provided his blue haori, and later supported his major plans 109 110 232.
• Miroku — Spiritual benefactor and ally. Her remaining energy empowered Masayo against Chi, and her chakra later allowed her to return through him 13 195.
• Kazahana Koyuki / Yukie Fujikaze — Land of Snow daimyo, actress, political partner, and romantic companion. She gave him the Light-Concealing Sword and chakra-powered car; later she is pregnant with his son, Kazahana Yoru 29 81 291.
• Kurama Yakumo — Student, close ally, and former romantic interest. Masayo helped eliminate Idō and restore her health, while Yakumo later relinquished her feelings after recognizing his relationship with another woman 48 53 225.
• Shion — Priestess, household companion, and romantic partner. Masayo protected her from Obito and Mōryō; after the war, she is pregnant with his daughter, Zi Ling 127 176 291.
• Kaguya Ōtsutsuki — Ancient partner and co-ruler. Their relationship began during Masayo’s time in the past, and they later jointly held supreme authority over the Land of Night 225 248.
• Konan — Former adversary who becomes an ally and later part of Masayo’s family. Masayo accepted responsibility for stealing her Explosive Tags and entrusted her with protecting Koyuki 237 252.
• Naruto Uzumaki — Junior ally and later student in Rasengan training. Masayo protects, criticizes, and mentors Naruto when needed rather than indulging his reckless impulses 107 176.
• Sasuke Uchiha — Student and trusted ally. Masayo trained Sasuke, suppressed his Cursed Seal’s pain, and later encouraged reconciliation with Itachi 37 70 225.

Story Role / Major Arcs

• Fishbeam Forest — Defeated Chi with Miroku’s aid, Kurenai and Ebisu’s support, and an empowered Rasengan. The incident introduced the Life Spirit and prompted his Yin–Yang Release research 13 17.
• Ninja Academy period — Accepted a low-pressure physical-education teaching role as cover for intensive training, using Shadow Clones to fulfill his duties 17 18.
• Land of Snow mission — Led Team 3’s protection mission for Yukie/Koyuki, defeated Nadare Rōga, became an unwilling film star, and forged a lasting bond with the future daimyo 19 23 30.
• Team 12 and Yakumo’s recovery — Became a Jonin and Team 12 leader, confronted Idō through Spirit Transformation Jutsu, and helped Yakumo recover through Akimichi Yang Attribute cultivation 45 48 52 53.
• Land of Waves intervention — Secretly entered the Land of Waves to meet Haku, manipulated Gato’s downfall, and arranged new lives for Haku and Zabuza in the Land of Snow 54 59.
• Shikkotsu Forest training — Purchased the Mysterious Peacock Method, later entered Shikkotsu Forest under Katsuyu, and mastered Sage Mode 60 109 110.
• Konoha political reform — Worked with Tsunade, Root, and the Hyuga clan to dismantle Koharu and Homura’s influence, using deception and Sage Mode to capture the elders 112 116.
• Land of Demons conflict — Protected Shion, battled Obito, destroyed Mōryō’s soul, and became involved in the priestess lineage’s future 127 176.
• Prehistoric era — Sent through time by the Dragon Vein, adopted the name Ye Feiyu, encountered Kaguya and the ancient Katsuyu, and cultivated for over a year while only six days passed in the present 203 215 225.
• Land of Night leadership — Helped establish and later reform the Land of Night’s government, rejecting permanent personal rule in favor of rotating leadership, Akatsuki oversight, and retained supreme supervision 248 291.
• Postwar era — Following the defeat of Manjusaka and the rebuilding of the Ninja World, relinquished supreme authority as the Land of Snow and Land of Demons joined the Land of Night 291.

Notable Quotes

“Think three times before acting.” 74

“People who walk in the light can make one mistake by accident and be hated by countless people... Meanwhile, people who have always walked in darkness and done every evil deed can suddenly do one good thing, and everyone says they have turned over a new leaf.” 134

“A good person was someone useful to oneself, someone called a good person. Masayo had never labeled himself a good person, nor had he ever claimed to stand for justice.” 82

Trivia

• Masayo was cast without his knowledge as the male lead in Princess of the Wind and Clouds: Final Chapter: The Last Princess alongside Koyuki 30.
• He is wealthy enough to produce 500 million ryo in cash after taking Koyuki’s joking demand seriously 82.
• He refused to learn the Flying Thunder God from the Scroll of Seals at first because he believed it overlapped with Wind Body Flicker and would distract from Yin–Yang Release research 33.
• His extreme mission preparedness prompted Jiraiya to ask whether he was a “treasure chest” 129.
• He adopted the name Ye Feiyu while posing as a traveling scholar in the prehistoric Land of Ancestors 203.