Skimmed through Chap 1-11 other than the past thing the girl remembers which is like 1-2 pages & no severed body parts guts spilling & etc there isn't really a need for the Gore Tag it's pretty tame tbh. (this comes from someone who's accidentally read a Dead or Alive Doujin were their fave character gets gutted, cooked & eaten & fully in color to boot)
& don't ask me about the story as I didn't read it only skimmed through it as to check if it really needed the gore tag.
Hope this helps anyone who's still on the fence after seeing the Tag
[Edit] no idea if this will change in the future