(No not like fully but like maybe only one of them is deaf and then they hear for the first time when they meet their soulmate and their soulmate speaks-and that could also be interesting because what if they don't admit to it right away, what if they hide it-like you see what I'm saying?)
(Alright well, I dont really think they should you can if you want since its your character because mine isn't gonna be deaf like actually deaf but have fun with yours)