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Description
Nobutaka Osanai is the eighth leader of the Moebius gang, a delinquent group that controls the Shinjuku area. He is introduced during the early arcs of Tokyo Revengers as a formidable and brutal opponent. In his teenage years, he has a striking appearance characterized by a blond pompadour, narrow menacing eyes, a diagonal scar across his forehead, and a constant smirk. He wears the traditional Moebius uniform with the inscription "Eighth generation president" on the sleeve. In the present day, he appears drastically different, with his hair returned to its natural black, a hunched posture, missing teeth, and a generally worn-out look.

As a young gang leader, Osanai is brusque, violent, and highly confident in his fighting abilities. He looks down on delinquents outside his gang and carries a sinister, charismatic aura that attracts followers. However, his confidence masks a lack of strategic thinking, making him easily manipulated by more cunning individuals like Tetta Kisaki. He is quick to resort to violence and lacks patience in dealing with opponents. In stark contrast, his adult self is a shell of his former self. After experiencing the hardships of life, he becomes a meek, mild-mannered construction worker who is easily startled and apologizes for everything. This drastic change illustrates the profound impact of his past actions and the loss of his former status.

Osanai is primarily driven by a desire for power and control within the delinquent world. As a teenager, he wants to maintain the dominance of the Moebius gang and prove his strength. He is easily swayed by Kisaki's manipulation, who uses him as a pawn to provoke conflict with the Tokyo Manji Gang. His motivations are simplistic and rooted in ego and a lack of foresight. In the future, his only motivation appears to be surviving in a menial job, showing how his former ambitions have been completely crushed by time and circumstance.

His role in the story is that of an early antagonist who serves as a catalyst for the conflict between the Moebius gang and the Tokyo Manji Gang. He is responsible for severely injuring Pah-chin's friend, which triggers the Tokyo Manji Gang's retaliation. During the ensuing confrontation, Osanai initially defeats Pah-chin using his unorthodox boxing style but is quickly and decisively subdued by Mikey and later by Draken. He is subsequently stabbed by Pah-chin in a moment of shock, leading to the dissolution of the Moebius gang as its members are absorbed into Tokyo Manji. In the present timeline, he appears as a minor figure, providing information to Takemichi and Naoto about how his life spiraled downward following the death of Draken.

Key relationships include his contentious rivalry with Mikey and Draken, whom he initially dismisses as children but is unable to defeat. His respect for Draken is revealed in the future, where he blames Draken's death for his own miserable life. He is also a pawn of Tetta Kisaki, who manipulates him into attacking the Tokyo Manji Gang. His defeat at the hands of Pah-chin, who stabs him in retaliation for the injury to his friend, marks the end of his reign.

Osanai does not undergo significant personal development within the main timeline. His character is defined by the stark contrast between his arrogant and powerful teenage self and his broken, defeated adult self. This contrast serves as a narrative device to show the long-term consequences of gang violence and the fleeting nature of power. In the future, he has no desire for redemption or improvement, only resignation to his diminished state.

His notable ability is his unorthodox boxing style, which involves a hopping rhythm while punching, allowing him to land unexpected blows. This technique is effective against opponents like Pah-chin but is no match for the superior skills of Mikey or Draken. Beyond his physical strength, he has no special abilities or strategic intelligence, relying solely on brute force and the numbers of his gang to maintain control.