Please don't tell me this will be shoujo-ai or something, there's already lots of fan service for that. You know what? just don't put any romance in it.
Found the novel! The tags are Adventure, Comedy, Fantasy, Slice Of Life, Based On A Light Novel, Gender Bender, Person In A Strange World, Reincarnation, RPG, and Vampires.
Please don't tell me this will be shoujo-ai or something, there's already lots of fan service for that. You know what? just don't put any romance in it.