I made my girlfriend's younger sister (plain, shy, and not interested in sex) fall into a state of drug-induced ecstasy and turned her into a creampie urinal Mei Itsukaichi

The movie revolves around the complex and intimate relationships between the protagonist, his girlfriend, and her younger sister Mei. The story explores themes of desire, intimacy, and boundaries, as the protagonist finds himself drawn to Mei despite her initial reluctance and shyness. As the narrative unfolds, the dynamics between the characters become increasingly complicated, leading to a dramatic and intense confrontation.