My stepfather's wife is teasing me about my stepfather. Please forgive me now...

Sae is a beautiful wife who lives with her bad stepfather Shigeji, who is vulgar and unserious, and also a gambling fan. Shigeji, who has been looking for a young and beautiful woman, has been peering in the bath, stealing her underwear and smelling them on a regular basis. One day, Sae's husband, Makoto, decides to leave her house on a two-night business trip... Shigeharu even reveals his true nature as if he is now an opportunity to attack him. He desperately tries to keep him from running away, and then he holds him down with a bloody cock...