When Sakura was 20 years old, she got pregnant and gave birth to Tatsuya alone. Tatsuya graduated from high school and entered nursing school to become a nurse. Then, the night before Tatsuya was to enter nursing school, Sakura woke up to a touch on her body. She realized it was Tatsuya touching her, but continued to pretend to be asleep. Then Tatsuya came home for the first time since graduating from nursing school for a long break. Sakura decided to take Sakura on a trip to a hot spring to spend some time alone together as mother and son.