After giving birth, her husband continued working late every night and offered almost no help with childcare. With no one around to rely on, Ayumi developed severe postpartum anxiety and eventually lashed out at her son, Taichi. The abuse became routine, and upon discovering this, her husband demanded a divorce. After the divorce, she was consumed by regret and never allowed herself to think about Taichi again. However, 23 years later, she received a message from her ex-husband saying, "Taichi wants to see you." Burdened with guilt and uncertainty, she resolved to meet him just once and made her way to the arranged meeting place.