I'd say all the genres listed are completely correct. This is in no way a romance whatsoever. It's one of the 1st yaois I read and I still can't find anything that can compare.
I wouldn't suggest this for anyone sensitive to sexual abuse and violence, blood and gore and a lot more.
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.
Heartless