Rie had an affair and gave birth to Tatsuya. Rie raised Tatsuya as a single mother and, not wanting him to feel pitiful, became a hardworking career woman. Tatsuya also understood the situation, never made demands, and helped with household chores, but loneliness built up inside him. Around the time Tatsuya entered university, Rie took accumulated paid leave and went to an inn with Tatsuya. However, even here, Rie was still thinking about work.
