On her way home, Yui is suddenly attacked and violently raped by a man. Helpless, she falls under the control of this stranger, forced into a life of sexual servitude as nothing more than a fleshlight for his desires. Yet, within this torment, her body begins to change. Her slender frame awakens to pleasure, transforming her into a lustful girl who craves the man's cock. As her arousal intensifies, she finds ecstasy in the penetration of his thick meat, moaning and climaxing wildly, consumed by depraved ecstasy.