I remember watching this show, I’m not sure if it was on cable or not, but it was an anime show about two sisters but one of the sisters was dead. She was a ghost but her sister could still see her, and kids at highschool would bully the Alive sister and the ghost sister would kill the bullies is super gory ways, it was kind of a goofy show though even though it’s a really dark idea. I believe I would watch in on demand somehow but I cant remember what it was through. This was probably 7 or 8 years ago