Known for his coolness, Joe Yuki is a well-regarded DJ in Shibuya who keeps his identity as a secret gang leader under wraps. His challenging upbringing has caused him to have contempt for those he perceives as feeble, driving him to obsess over victory. During a fateful evening, Joe observes an elderly gentleman being harassed by someone who goes by the moniker "the human punching bag," triggering a painful reminiscence of his own childhood traumas. In a split-second decision, Joe steps up to the bully, but his impulsive action leads to his crushing defeat and wounded pride.