A gluttonous little sister sneaks into her brother's room and eats some sweets without permission, but it turns out they contain an aphrodisiac that makes her pussy lewd!! After tasting the aphrodisiac, the little sister's breathing becomes heavy, she starts sweating, and she starts masturbating in front of everyone!! The quiet little sister is reborn as the epitome of sex!!! She attacks her brother, inserts his dick herself, and starts violating him with a lewd hip movement that she doesn't know where she learned it from!! If a person falls this far, it's all over!!