Ever since he was little, Mar-kun lost his mother and was raised with love by Yuria-san, his father's second wife. After learning to masturbate, he would jerk off every night using netorare videos as material. Later, his parents divorced, and he went to live with Yuria-san; now they live together. Recently, while staring intently at the face of an erotic actress he found… “Huh? This person looks just like Mom…! Ugh!!!!!!! ” His semen spurts out. “N-no way… It’s just a coincidence, right?” “Mar-kun, were you jerking off to this woman?” “W-what?! When did you find out?! N-no, I just happened to find an old actress…” “Hmm~ I’m happy!” “S-sorry… Happy? You said happy?” “Of course I’m happy… Because this actress is Mom◆” “W-what…///” (Thump) Yuria-san, who usually seemed plain, was actually a legendary superstar AV actress! Overjoyed, she pulls out erotic costumes and starts private lessons with Mar-kun! Starting from glans fellatio to testicle sucking, vacuum fellatio makes him explode in her mouth in an instant! “Ah~ah, already came this much…”. After that, even his virgin friend Yamamoto gets involved, starting days of elite sex education. Mar-kun and Mom have real sex, milking him until his semen runs dry.
