Watashi ga 15-sai dewa Nakunatte mo.

Iwashita is a middle-aged salaryman enduring a quiet, suffocating existence. At forty years old, his daily life is defined by repression and isolation, marked by the constant nagging of his wife and the cold rejection of his own daughter. Stripped of warmth and purpose within his household, he drifts through his routine until a chance encounter abruptly shatters the monotony of his world. His path unexpectedly crosses with a fifteen-year-old girl named Chyna, who approaches him with a startling proposition: she offers to share a meal with him in exchange for twenty thousand yen, effectively inviting him to become her "daddy." What begins as a transactional arrangement quickly evolves into something far more complex, pulling Iwashita out of his emotional numbness and into uncharted territory. This fateful meeting sets the stage for a deeply painful yet dazzling narrative that intertwines two profoundly lost lives. As Chyna desperately searches for her own sense of self-worth through this unconventional connection, Iwashita finds himself caught in an agonizing internal war. He is forced to navigate the treacherous divide between his rational mind and his suppressed desires, embarking on a journey that challenges everything he thought he knew about himself.