Yayoi (Mashiro Anzu) ended up in a romantic relationship with her son Tatsuya. It started as a half-joking revenge against her husband who was always busy with work, but it has continued beyond Yayoi's expectations. (We're family... But maybe because we're family? He feels better than my husband.) Yayoi's body had already fallen, becoming wet the moment her husband left. Realizing she can't turn back, today too, two seconds after seeing her husband off, she and Tatsuya fiercely indulge in each other...
