Sam discovers a sinister dating simulation titled "The Female Leads Truly Loves You," a harem-style game featuring gorgeous female leads and adult content designed to captivate players. The game begins as an intoxicating experience of romance and sexual conquest until its shocking climax exposes a terrifying truth: when each female lead learns the male protagonist loves multiple women, they transform into deranged, obsessed monsters. Living up to the game's title, every character craves exclusive possession of him through increasingly horrific means. Some preserve his dismembered body in formalin; others keep his decapitated head beside their pillows as a nighttime companion; still others fashion grotesque specimens from his blood. Recognizing the inevitable deadly fate, Sam attempts to evade these yandere beauties, but their supernatural powers make escape futile—they track him relentlessly through mystical means. His only salvation arrives through a system that empowers him to fully dominate each female lead, transforming the deadly cycle into a path toward both survival and exponentially increasing strength.