Yua's become the wife of her beloved Sensei, but at the same time she's also become the mother of her classmate Subaru! Sensei's ex-wife Sayaka appears in front of Yua and tells her to her shock that Sensei spent the night at Sayaka's house the night before. While she's still reeling, Subaru, worried about her, suddenly confesses his love. The two of them spend a night together, but what does that mean...?! At school and at home, she's gotten tangled up in some complicated after-school marriage blues!!!