I assume they anticipated the instructions were cursed too.Why not have the instructions separate why would you throw it away together
I know the 1st 3 Hellraiser films have got Japanese dubs and recently have BD releases so they're at least a very well known thing there although I dunno how big its popularity is.I never would have imagined people in Japan knew about Hellraiser, but this is the most blatant referential piece of story I've ever seen.