Stumbled on its YT short. A Comment said that it’s done by the same author of Claymore! A nice guy with a scary face. There’s an anime about it too but it didn’t finish the entire manga
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.
Angel Densetsu