It's primarily finding yourself in a character or finding that character in yourself. Mainly identifying as or with, depending on how high you kin them. It can be mentally, emotionally, or even physically (like phantom feeling). Fictives are exclusive to plurality (don't ask me about them though... I'm not a system). Relating to a character is synpath. There's many other identities i can't explain currently LOL There is an alterhuman and a otherkin wiki that can give more info Compared to lil ol me!