Kaoru Miyata, now 50, travels from Sendai to Tokyo to visit her son Hiroshi, who lives alone while preparing for college entrance exams. Excited to reunite, Kaoru is dismayed to find Hiroshi's room in disarray, littered with porn magazines and adult videos. When she tries to scold him, Hiroshi protests that he's sexually frustrated and can't focus on studying, proudly displaying his erect penis. Seeing her son's innocent yet desperate state, Kaoru's heart aches with sympathy and maternal concern.