The series 'Kansen: Inyoku no Rensa' follows a young man who becomes the carrier of a sexually-transmitted curse that awakens insatiable lust in any woman he has intercourse with. The nightmare begins with his innocent girlfriend, Satsuki. After their first time, the curse takes root, transforming her from a sweet girl into a nymphomaniac slut who craves constant, rough fucking. Her body becomes a playground for depravity, demanding to be filled by any cock she can find, starting with the protagonist but quickly escalating to shameless group sessions and public displays. The infection then spreads like a plague to Satsuki's prim and proper best friend, Miyu. Once infected, Miyu's repressed desires explode, turning her into an even more debauched fuck-toy than Satsuki. The two girls, now slaves to their cunts, engage in relentless lesbian orgies, threesomes, and gangbangs, their minds completely shattered by the curse's power. They eagerly offer every hole to be violated, their moans of pleasure a testament to their complete submission to carnal damnation, dragging the protagonist deeper into a spiral of non-stop, depraved sexual encounters.