Tatsuya was the child Rie had an affair with. Rie raised Tatsuya as a single mother and became a career woman who worked hard in order not to make Tatsuya feel pity. Tatsuya also understood the situation and helped with the housework without being selfish, but loneliness was building up. Around the time Tatsuya entered university, Rie and Tatsuya headed to an inn to spend the vacation time they had saved up. But Rie was still thinking about her job even when she was here.
