The Kawakami couple once appeared on television as an exceptionally close marriage, but their private life changed in their forties. Yu's libido is stronger than ever while her husband Kenichi can no longer keep up, leaving her trapped in a sexless relationship with no one to confide in. In this adult mother-and-son role-play, she finds a forbidden opportunity to turn her frustration into action, slips into her adult son's bed, and pursues incest-themed sex ending in a creampie.