Jin Takamura, professionally known as Takamura Jin (高村仁), is an actor with black hair and grey eyes. His pragmatic and assertive personality prioritizes results over emotions. He demonstrates strong organizational skills and natural leadership within his group, frequently taking charge of situations and driving decisions. This demeanor includes confrontational or aggressive tendencies; he maintains a tough exterior, actively avoids emotional expression, and struggles profoundly with vulnerability, finding it difficult to understand or convey feelings.

Before his yakuza life, Jin pursued a music career with aspirations in the industry. Circumstances led to significant debt, forcing him into service as an enforcer for the Gokudolls group to repay his obligations. Despite this shift, he secretly continued singing, preserving his passion for music. This fuels an internal conflict between his demanding yakuza duties and his enduring musical ambitions, leaving him caught between organizational expectations and personal dreams. He persists in striving towards his musical goals regardless.

Within the narrative, Jin holds a unique position as the favorite actor of Mari Tachibana, a Gokudols member. Mari avidly collects his films and expresses intense admiration for his work. A key moment occurs when Mari attempts to offer herself to him, an advance that meets rejection.