After unexpectedly losing her husband Shin, Koharu works hard to provide for her two children, Nozomi and Riku, despite facing financial hardships. When denied assistance at the social welfare office, Koharu reveals her estrangement from her mother Sachi, who left her and her father two decades ago. The welfare office contacts Sachi, who, surprising Koharu, expresses willingness to offer support. This revelation prompts Koharu to consider reuniting with her long-lost mother after
