Excellent questions! There's no limit on how many characters of the same zodiac sign can be in this role-play. Just because we have a Metal Snake and a Fire Snake, doesn't mean you cannot have your Water Snake character.Sweet!
Yet to catch up on the rp, but here are my two character ideas so far.
Snake-water (sort of a water serpent angle, maybe a demon or a Risen, but I have to flesh this out more than that).
Then a character who's a year of the horse and I'm currently thinking of going the "strong and graceful, but is very subdued and shy/anxious," like how horses are in real life. Think of a gentle giant that very well might punch you if you tap them on the shoulder while standing behind them.
EDIT: Okay starting to look more into things and doing some research and I'm starting to lean into this serpent idea more (though there is a serpent character aleady..) after re-reading the opening discussion post, but now I have a question. Is the setting of this RP strictly Asia or can we make our characters be from anywhere in the world? I'm fine with anything, just wanted to ask so I have a better idea of what I can do with my character.
Jadewall is a made up city based on China. However, your character doesn't have to be born in Jadewall. They could have been from somewhere else, just as long as they are at the academy or in lower Jadewall to start. If you have any more questions, feel free to let me know.