In the eerie, candlelit confines of the Mugen Train, demonic forces stir the darkest desires of its anime passengers. Tanjiro Kamado and his comrades, once innocent, now battle their inner demons as their bodies contort and transform, fueled by a mix of sexual tension and bloodlust. As the train rattles through the night, so do their inhibitions, leading to taboo encounters that blur the line between humanity and monstrosity.