Shiho Sakura, who divorced 10 years ago, has been raising Kota alone as a woman. - After graduating from university, Kota got a job, but his commute to work takes more than an hour. - Shiho suggested that he live alone, but Kota would not leave the house. - On the contrary, he doesn't go out to play on his days off, and he doesn't bring his friends or girlfriend with him. - Worried, Shiho invites Kota to a hot spring trip to take him out once in a while.