Tatsuyoshi's Father works as a police officer in the rural town anchoring the story, embodying both authority and paternal duty within the community. He keeps a bokken—a wooden training sword—symbolizing traditional masculinity and honor. This object emerges as a focal point in his fraught dynamic with Tatsuyoshi after his son briefly steals it, revealing unspoken tensions and unmet expectations.

His narrative arc darkens when he gambles away a neighbor’s savings alongside a woman tied to local criminals. Consumed by guilt and shame, he takes his own life, triggering a pivotal shift as Tatsuyoshi and Shinko confront the woman, forcing them to grapple with adulthood’s harsh complexities. His death amplifies themes of parental fallibility and the shattering of idealized familial bonds.

His choices subtly shape Tatsuyoshi’s determination to forge a responsible fatherhood, contrasting generational failure with aspirational resolve. His absence lingers, deepening Tatsuyoshi’s grief and challenging his journey toward maturity, as the loss of a flawed role model underscores the fragile transition from childhood innocence to adult understanding.