There is a reason why Ken, who used to be kind, started avoiding his mother, Asami (Masuo). Asami entered the room where Ken was masturbating without even knocking. After that, Ken never opened his heart to Asami. Asami is raped by Ken even in front of Ken's friend Hideyuki. Hideyuki, who initially tried to comfort her, can no longer stand Asami's voluptuous body and pushes her down. However, Asami's tragedy did not end there...