Ah, I'd started watching Kakuriyo before my work schedule went all ridiculous. Glad it sounds like it's worth continuing! (I'll get to it eventually.)

Most of the stories I'm thinking of have the relatives still alive (some are trapped somewhere, some are just grown up and want their children/next generation to have some unnatural adventures too)-- now I'll have to look around my bookroom and see if anything jumps out at me.