Well, the magic can be similar, but it's encouraged to make your own original kind of magic. If it's too similar to a character from the anime/manga, chances are it won't get accepted. 

Another kind similar to it could involve using the Chinese zodiac since some celestial can be there and there are the chances of having new different characters instead. But that's just a thought I had since I could imagine taurus or Sagittarius, one is a ox and the other is a horse ish. I could imagine a few others, but they could instead be related to those celestial characters or something lol.