In "Oppai Heart," high school student Ryuya and his friends accidentally consume a medicine that heightens their sexual sensitivity and causes their female classmates' breasts to enlarge. As the girls become overheated, Ryuya and his friends step in to provide relief and assist in creating a vaccine that requires pregnancy. The school is soon filled with pregnant girls eager for intimate moments to alleviate their condition. This sensual and steamy anime series explores the sexual awakening of students in a unique and captivating way, keeping viewers on the edge of their seats.

Tags: oppai heart, bald pussy, big tits, busty teen, creampie, cumshot, doggy style, family, huge tits, schoolgirl, schoolgirl uniform, sister, teen