I'm not sure what list to put this in, because it does take place in either, and it uses science, BUT it does have fantasy in its tags, so I'm putting it in fantasy
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.
Solo Leveling