[AKYS Honpo] Musuko o Ijimeteita Kodomo ni Hahaoya ga Netorareru [=White Symphony=]

A possessive schoolboy corners his victim's lush, ponytailed mother, pawing her heavy breasts with boyish glee and begging, "Th-There's no other way, I guess. Once... just once, okay?" The climax hits hard when he explodes inside her while a jealous rival pounds away in the background—leaving his rival pregnant as a final, shocking twist.