One day, female college student Asahi suddenly finds herself restrained in an unfamiliar place. Before her, a game is presented—she is told that failure means torture, forcing her to desperately strive for victory. But the torture brings not pain, rather intense sensations that shake both her body and mind. As she repeatedly wins the games and is driven to orgasm after orgasm, she eventually climbs atop the man herself, grinding her hips in a desperate pursuit of ultimate pleasure. This relentless cycle becomes a new experience for her—one that leads to an awakening like no other.