Mū

Biodata

Feature	Information
Name	Mū (无)
Alias(es)	Second Tsuchikage
Gender	Male
Affiliation	Iwagakure
Occupation/Role	Second Tsuchikage; Dust Release specialist
Status	Reported deceased by the time of the Five Kage Summit; later appears among the historical Kage in a cross-era conflict 244 679
First Appearance	Chapter 113

Background

Mū served as Iwagakure's Second Tsuchikage and trained Ōnoki, who later succeeded him as the Third Tsuchikage. He was also a disciple of the First Tsuchikage, Ishikawa. 137 680 683

During his earlier life, Mū and the young Ōnoki were overwhelmed by Uchiha Madara's presence and forced to their knees. The encounter left a lasting trauma on Ōnoki and demonstrated the vast disparity between Madara and Iwagakure's leadership at the time. 113 133

Madara later learned that Mū had died, though the circumstances of his death are not detailed in the provided material. Iwagakure and Kirigakure nevertheless retain a historical grievance connected to Mū and the Second Mizukage, Hōzuki Gengetsu. 244

Personality

Mū is blunt, combative, and easily irritated by Hōzuki Gengetsu's provocations, yet he remains attentive to his rival's condition and willing to cooperate when necessary. 680 681

He is deeply committed to Iwagakure and Ōnoki's survival. Even when severely injured, he returns to battle, supports his student with Dust Release, and prepares to sacrifice himself so Ōnoki can escape. 683 684

Despite his resolve, Mū can be intimidated by overwhelming opponents. When confronted with Uchiha Madara's Susanoo clones, he initially panics and flees before rejoining Ishikawa and Ōnoki. 683

Abilities & Skills

Dust Release: Atomic Dismantling Jutsu

Mū uses Dust Release with exceptional speed and power, forming transparent or white cubes before firing disintegration beams. His teacher, Ishikawa, judges Mū's Dust Release talent superior to his own. 679 680

• Can form and maintain Dust Release constructs from both hands simultaneously. 679
• Fires Atomic Dismantling Jutsu rapidly enough to threaten several Kage at once when Uchiha Kō redirects the technique. 679
• Can combine his Dust Release with an ally's technique to produce a larger detonation. 680
• Sustained use can burn out the chakra pathways in his arm, leaving him unable to maintain the technique. 680

Mirage

Mū possesses a genjutsu called Mirage, which he deploys after recovering from severe injuries. Tsunade ultimately breaks and destroys the illusion. 685

• Used while coordinating with Hōzuki Gengetsu in battle. 685
• Its full mechanics are not described. 685

Steaming Danger Tyranny Combination

Mū can coordinate with Hōzuki Gengetsu's Steaming Danger Tyranny by using Dust Release to detonate its child-like vapor construct. The resulting blast fails to harm Uchiha Kō. 680

Relationships

• Ishikawa — Teacher and First Tsuchikage. Ishikawa rescues Mū after Uchiha Kō captures him and later fights beside him to protect Ōnoki. 680 683 684
• Ōnoki — Student and successor as Tsuchikage. Mū supports Ōnoki against Madara and is prepared to die to secure his escape. 137 683 684
• Hōzuki Gengetsu — Longtime rival and fellow Second Kage. Their hostility persists, but Gengetsu saves Mū with a rare healing pill and considers him family in their unfamiliar circumstances. 680 681 685 690
• Uchiha Madara — Formidable adversary whose power once overwhelmed Mū and Ōnoki; Mū later joins Ishikawa and Ōnoki in confronting him. 113 683
• Uchiha Kō — Opponent who captures Mū, dislocates his shoulder, and redirects his Dust Release against the other Kage. 679 680
• Tsunade — Opponent who breaks Mū's Mirage genjutsu. 685

Story Role / Major Arcs

Battle against Uchiha Kō

Mū is chosen to test Uchiha Kō after the other historical Kage fail to gauge his strength. His Dust Release forces Kō to avoid taking the attack directly, but Kō closes the distance, dislocates Mū's shoulder, and redirects Mū's jutsu toward the Second Mizukage. 679

Ishikawa retrieves the incapacitated Mū and restores him with a black pill. After recovering, Mū forcibly resets his own shoulder and joins Gengetsu's plan to detonate Steaming Danger Tyranny with Dust Release; Uchiha Kō survives the combined attack unharmed. 680

Confrontation with Uchiha Madara

Mū joins Ishikawa and Ōnoki in using three simultaneous Dust Release attacks to dismantle Madara's blade aura. When Madara responds by creating nine Susanoo clones, Mū initially loses his nerve but later continues supporting Ōnoki. 683

After Ōnoki destroys the clones, Mū and Ishikawa help buy time against Madara's Complete Body Susanoo. Mū is gravely wounded and apologizes to Gengetsu for being unable to contribute further. 684

Recovery and Final Cooperation

Gengetsu saves Mū with a rare healing pill, allowing him to rejoin the fighting. Mū then employs Mirage, but Tsunade destroys the illusion. 685

Later, while immobilized by overwhelming pressure, Mū warns Gengetsu that the force is disrupting their chakra circulation and could cause their bodies to explode if they resist improperly. 690