Kanori frequently takes her boyfriend Junshi to her parents' home because she lacks dating funds. Her mother, Sakii, warmly welcomes him. Although they appear to be a happy couple and mother, in reality, Junshi and Sakii have been secretly having a physical relationship behind Kanori's back. The two continue their affair discreetly, but one day, Kanori catches on when she sneaks a peek at Junshi's smartphone…
