Kanori frequently takes her favorite boyfriend, Atsushi, to her parents' home because she has no dating funds. Her mother, Saiki, welcomes Atsushi. Although they seem like a happy couple and mother, Atsushi and Saiki are actually having a physical relationship behind Kanori's back. The two of them continued their relationship in secret so that Kaori wouldn't find out, but one day, after Kaori snooped on Junshi's smartphone, she found out about their relationship...
