Narumi is a serious and studious honor student, popular in class and admired as a beautiful girl. One day, on a whim, she starts engaging in paid dating through an app. There, she takes an aphrodisiac for the first time, completely transforming her sensitive body. Her vision sparkles, her senses amplified dozens of times over. Choked to the brink, eyes rolling back, her body convulses in overwhelming, extreme pleasure. Hooked on sex beyond anything ordinary, she becomes increasingly addicted. Again and again she visits men, receiving creampie after creampie even on her fertile days. Narumi has fully evolved into the perfect cumdump.