KyuuSushi
I ended up liking your story a lot (and more with the little known world), although seeing how gyaru goes, I thought the romantic interest would be the girl "crocell kerori", since it would make the story more interesting with an antisocial girl and that as arita would enter the school, I'm not saying that gyuru is a bad option, but "crocell kerori" seemed like a more interesting option xD, ) - Although it wouldn't hurt to keep both of them(they work in the same trade , they would have a lot of interaction , but let the main character be the dominant one).