I am reading a manga where the main charcter is a girl who goes to a school where it is mostly boys like 6 boys to each girl. So to make the boys not chase the girls and bug them all the girls must wear a mask. They get to choose the mask themselfs. One girl is a cat face, one is a microwave, and the main girl is a horse head lmao.
http://m.mangahere.co/manga/afo_guard/