Our main character Ryuya has an older sister, Miya. He lives an ordinary, peaceful life, going to high school with his friends. One day they find a bottle of magic juice together, the label of which says: if a girl drinks it, she will grow breasts and become more sexy, and she will be more attractive... and guys will increase their penis ^.^, but as it turns out it has a side effect... Constant craving for sex, and to stop it, girls have to get pregnant. Somehow, the masculine-looking Ryuya has also been experimenting with some other addicts who are eager to help him, and even if they are, they will get pregnant.