Tanjiro's world of duty and honor is upended when he stumbles upon a forbidden scroll, its pages filled with explicit illustrations of him and his fellow demon slayers engaged in carnal acts. His mind races as he envisions Nezuko, his sister, spread-eagled and moaning, her demon form coiling around him, urging him to penetrate her. The scroll's magic begins to manifest, and Tanjiro's cock throbs, aching to plunge into the taboo delights it promises.