Honestly it's really only here not cause of their relationship, but because the story focused on the horror aspects pretty well. Loved how they (spoiler) both died. Really got me invested.
You may feel your favorite manga should be gathered together into distinct categories for your own reference and, now, you can do this with a LIST. After you've created your list or lists, you can proudly recommend them to other manga fans to showcase and share your taste in manga.
Never Understand