Yusuke

Biodata

Feature	Information
Name	Yusuke (右介)
Alias(es)	Number 6; Ji (used by Root personnel) 6 26
Species/Race	Human
Gender	Male
Affiliation	Konohagakure; formerly Root; Squad Seventeen 11 19
Occupation/Role	Chūnin; captain of Squad Seventeen; reconnaissance and support ninja 19 45
Status	Active 50
First Appearance	Chapter 1

Power Progression

Stage / Realm / Level	Chapter	Notes
Chūnin	1	Officially assigned to Tsunade's Amegakure reconnaissance mission; his actual prior missions and specialized abilities are sealed from most personnel.
Incursio: First Stage	8	Activates white armor and a crimson-bladed spear to fight Hanzō. Its speed reaches Kage-class physical levels, but initially causes severe internal damage and can be sustained for roughly five minutes.
Elite Jōnin-level unarmored combat ability	17	After three months under Tohka Senju, masters seal-less ninjutsu, the Flying Thunder God Technique, and second-tier genjutsu. He can fight at elite Jōnin level without Incursio.
Incursio: Armor Form	30 31	Uses the transformed Red-Backed Shrike against Danzō and Root. The form raises his speed, strength, and reflexes to “Shadow”-level, but its usable duration is about two and a half minutes.
Shikkotsu Forest Sage Mode	38	Successfully balances natural, physical, and spiritual energy. Sage chakra improves his constitution and recovery, changes his hair to silver, and manifests blue facial markings.
Shikkotsu Forest Sage Art application	41	Learns to direct sage chakra toward either decay, which withers matter, or creation, which restores damaged life. The technique consumes enormous energy.

Background / History

Yusuke's records describe a childhood with his family, followed by orphanhood and recruitment into Root because of his exceptional talent. His memories are fragmented, which he attributes to a Root curse seal; the organization’s secrecy also prevents ordinary mission records from revealing his past assignments. 11

He is assigned to infiltrate Amegakure alongside Tsunade. To maintain cover, they pose as a married merchant couple, using coded touch signals to exchange intelligence. During the mission, Yusuke assists Konan and Seiichi, studies Amegakure patrol routes, and deduces the village's potential plan to attack the Land of Iron. 2 3 5

After surviving Hanzō's ambush, Yusuke becomes increasingly entangled in Konoha's internal conflict with Shimura Danzō. Tsunade brings him to Tohka Senju, whose genjutsu interrogation verifies that he genuinely cares for Tsunade; Tohka subsequently accepts him as her student. 12 13 14

Appearance

Yusuke normally has black hair and carries a greatsword. His appearance changes dramatically when he uses Incursio or Shikkotsu Forest Sage Mode. 15 38

• Incursio — white scaled leather armor, a flowing white cape, and a red-bladed spear form of his weapon. 8 30
• Sage Mode — silver hair and blue fluorescent markings across his face. 38
• Combat style — uses a greatsword as both a weapon and a medium for chakra transformation. 15 17

Personality

Yusuke is cautious, analytical, and survival-oriented. He constantly evaluates risks, detects inconsistencies in enemy behavior, and favors traps, deception, and intelligence gathering over direct confrontation. He is willing to manipulate enemies into fighting each other and tests allies before fully trusting them. 5 21 22 26

Despite his calculating nature, he is compassionate toward civilians and protective of people he considers his responsibility. He helps Konan and Seiichi despite the operational risk, protects Kushina during the Land of Whirlpools mission, and repeatedly places himself in danger for Tsunade and his squadmates. 2 5 28 32

He is also bluntly ruthless toward hostile shinobi, particularly Root agents and those who betray his trust. 23 24 30

Abilities & Skills

Sensory Ninjutsu

Yusuke can spread chakra through his surroundings to detect hidden presences, track movement, and identify danger before it becomes visible.

• Detected the suspicious conditions surrounding Amegakure's government building despite finding no obvious enemy formation. 6
• Identified Root pursuers following Squad Seventeen from two kilometers away. 21
• Locates Flying Thunder God markers over long distances. 31 50

Swordsmanship and Chakra-Enhanced Taijutsu

His primary fighting style combines close-quarters combat with greatsword techniques.

• Uses lightning, fire, and earth chakra transformations through his blade. 23
• Can coat the greatsword in elemental chakra and switch its attribute according to the situation. 17
• Defeated Root's Terai after concealing his actual strength until his teammates’ loyalty was confirmed. 22 23

Seal-less Ninjutsu

Under Tohka Senju's guidance and through Hashirama Senju's notes, Yusuke learns to bypass conventional hand seals.

• Channels chakra directly into his greatsword instead of relying on hand signs. 17
• Produces ranged lightning shockwaves from sword swings. 17
• Uses the weapon as an extension of his body, allowing ninjutsu to manifest where the blade points. 17

Genjutsu

Yusuke incorporates illusion techniques into fast-paced sword and taijutsu exchanges.

• Mist Servant Technique — creates illusory weapon shadows that interrupt an opponent's reactions. 26 29
• Cicada Time-Gap — produces a brief opening by disrupting an enemy’s perception and chakra control. 29
• Achieves the second tier of genjutsu through Tohka Senju's training. 17

Flying Thunder God Technique

Yusuke learns the Flying Thunder God Technique and uses marked kunai or personal marks as teleportation anchors.

• Teleports to specialized kunai during combat and infiltration. 26 29
• Leaves a mark on Hyuga Aya, allowing him to teleport directly to her location. 31 35
• Uses the technique to infiltrate a Sunagakure stronghold and rescue Inuzuka Go. 50

Incursio

Incursio is Yusuke's divine artifact and most dangerous combat trump card. It greatly enhances his physical abilities, transforms his weapon, and suppresses pain and exhaustion temporarily. 30

• First Stage grants Kage-class physical speed, enabling him to injure and force Hanzō into retreat. 8
• Armor Form transforms his greatsword into the spear Red-Backed Shrike and lets him slaughter multiple Root elites. 30
• Early use causes crushing strain on his organs, bones, muscles, and nerves. 8 9
• Its power originates from Tyrant, a destructive will that can seize control while Yusuke gathers natural energy. 39

Shikkotsu Forest Sage Art

Yusuke cultivates senjutsu under Sage Slug with Tsunade protecting his meridians through a medical barrier. 38

• Enhances recovery, physical constitution, and perception of natural energy. 38
• Decay — rapidly ages and disintegrates material touched by sage chakra. 41
• Creation/Revival — restores damaged plant life. 41
• Requires continuous balance between creation and destruction; excessive use causes severe hunger and mental exhaustion. 41
• Tyrant's destructive nature conflicts with the life-oriented balance of the Sage Art. 39 42

Mind Reading and Sealing Techniques

Yusuke uses invasive intelligence techniques against captured enemies and later applies Uzumaki sealing knowledge.

• Mind Reading Technique — extracts fragmented memories, locations, patrol routes, and enemy plans. 21 49
• Bypasses a Sunagakure jonin's defensive seal using techniques from the Uzumaki Sealing Scroll. 50
• Seals Danzō's ruined Sharingan as evidence of Danzō's crimes. 31

Equipment / Weapons / Items

• Greatsword — Yusuke's primary weapon and channel for seal-less elemental ninjutsu. 15 17
• Red-Backed Shrike — Incursio's crimson spear form, used during Armor Form. 30
• Flying Thunder God kunai — specialized marked kunai used as teleportation anchors. 25 29
• Explosive tags — used to create an escape opportunity during Hanzō's ambush. 7
• Healing potion — prepared by Tsunade and used after the battle with Danzō. 31
• Book of Sealing — recovered from the Uzumaki Clan ruins with Hyuga Aya. 36
• Uzumaki Treasure Vault key — assembled from two halves entrusted to Yusuke by Kushina and her late grandfather. 32

Relationships

• Tsunade — Mission partner, false wife during the Amegakure operation, healer, and eventual romantic partner. She supports his training, protects him from Danzō politically, and aids his Sage Mode cultivation. 2 12 38 41
• Tohka Senju — Mentor and political protector. She trains him in genjutsu and seal-less ninjutsu, while offering support against Konoha's internal threats. 14 15 33
• Hyuga Aya — Squadmate and conditional ally. They agree to cooperate over breaking the Caged Bird seal, and her Byakugan is vital during their Uzumaki ruins expedition. 24 35 36
• Inuzuka Go — Squadmate under Yusuke's command. Go comes to admire Yusuke's ability and remains loyal during Root's attempted ambush. 19 23
• Kushina Uzumaki — An Uzumaki survivor whom Yusuke escorts safely to Konoha. She entrusts him with half of the Treasure Vault key. 28 32
• Shimura Danzō — Former Root superior and primary internal enemy. Danzō repeatedly attempts to eliminate Yusuke, who defeats him in battle and obtains evidence of his Sharingan transplantation. 16 29 31
• Sage Slug — Senjutsu instructor at Shikkotsu Forest. Sage Slug recognizes Yusuke as an anomaly in fate and helps suppress Tyrant's awakening. 38 39
• Konan — Amegakure child whom Yusuke assists during his first mission with Tsunade. He buys supplies and an origami book for her before leaving the Land of Rain. 2 5
• Nawaki — Tsunade's younger brother. Yusuke shows concern for his safety and asks Orochimaru to protect him during the war. 9 46
• Orochimaru — A Konoha shinobi interested in Yusuke's abilities who offers information about Ryūchi Cave senjutsu. 41 45

Story Role / Major Arcs

Amegakure Infiltration

Yusuke accompanies Tsunade into Amegakure under the cover of a false marriage. He gathers patrol intelligence, discovers signs of Amegakure's military plans, and helps infiltrate the village's government building. Hanzō's ambush forces Yusuke to reveal Incursio for the first time and fight to protect Tsunade. 2 5 6 8

Root Conflict and Tohka Senju Training

After Root's surveillance exposes his connection to Danzō, Yusuke reveals his memory loss and curse seal to Tsunade. Tohka Senju verifies his intentions through genjutsu, takes him as a student, and teaches him principles that allow him to integrate ninjutsu, genjutsu, and swordsmanship. 11 13 15 17

Land of Whirlpools Mission

As captain of Squad Seventeen, Yusuke leads Inuzuka Go and Hyuga Aya through enemy territory. He exposes and defeats Terai's Root squad, investigates Uzumaki ruins, rescues Kushina, and survives Danzō's direct assassination attempt. 19 23 26 28 31

Uzumaki Legacy and Hyuga Alliance

Yusuke returns Kushina to Konoha, delivers the Uzumaki treasury keys to Mito, and later retrieves the Book of Sealing with Hyuga Aya. He also seeks Tsunade's help for Aya and the Hyuga Branch Family's effort to remove the Caged Bird seal. 32 36 37

Shikkotsu Forest Training

Tsunade brings Yusuke to Shikkotsu Forest, where he successfully enters Sage Mode. Tyrant's awakening nearly overwhelms him by consuming natural energy, forcing Yusuke to confront and temporarily restrain the will behind Incursio. 38 39 41

Land of Wind Reconnaissance

During the war, Yusuke leads Go and Aya on a reconnaissance and support assignment in the Land of Wind. He uncovers Miyazaki Kenta's schemes, captures Pakura, extracts intelligence from Sunagakure forces, and teleports into an enemy stronghold to rescue Go. 45 48 49 50

Notable Quotes

“High-end hunters often appear in the form of prey.” 21

“You are already surrounded by me.” 49

Trivia

• Yusuke uses physical contact and coded taps to communicate secretly with Tsunade while maintaining their married-couple cover. 2 3
• He is skilled at cooking and uses food to build rapport with Konan and Kushina. 3 32
• His Sage Art training leaves him with an unusually large appetite because of its energy consumption. 41 42
• He considers forming an organization called Night Raid, initially viewing Pakura as a potential first recruit. 37 49