Akira left her parents' house and lived in a dormitory. On the day of the graduation ceremony, such a student life came to an end. When she is on her way home with her schoolmates, a woman approaches her with a smile and a wave from the other side of the road. Her mother-in-law Honoka had secretly visited him to celebrate. However, she says, "Today is a celebration." Akira, who used to have a secret admiration for her when she lived with her, suppresses her desire to see her full of gaps and somehow sends her to the hotel.
