Guy seduces the ring/grudge style ghost that comes out of his closet (K) and they go hard. Kind of an odd blend of extremely weird and also a bit wholesome (they fall in love and he's very sweet to K even as he rails the living daylights out of her) back to kinda effed with a weird ghost-incest thing in ch. 4 when K's mom comes looking to bring her over to the other side. Graphic hentai in the style of "what am I actually looking at here".
Lady K and the Sick man