On a rainy evening, 19-year-old university student Fumi Saeki happens to meet 9-year-old Sarasa Kanai in the park. Fumi Saeki takes Sarasa Kanai to his apartment and they live together for the next 2 months. Fumi Saeki is then arrested for kidnapping.15 years later, Sarasa Kanai and Fumi Saeki happen to meet each other.