It can be a familial connection, but it also can be feeling like you empathize so much with that character that you feel like you ‘are’ them in a way.
Because of the way species vs singular person works ‘otherhearted’ is best described as a familial connection to a species (because you feel in some way that you are a part of that species, sort of adoptively), but fictionhearted is more of a personal connection (though it can be considered familial)
fictionhearted: I want to BE that.
Synpath: I want to HUG that.
Fictionhearted: that’s who I am in my heart, that’s what I should be. #me
Synpath: I feel connected to that on an emotional level. I feel a strong sense of empathy for that. #same
Fictionhearted: Someone with a strong emotional or spiritual connection to any fictional character or fictional species, without believing that they are that character or species.
Synpath: Any creature, or fictional character that a person strongly identifies with or feels an empathic bond with.
-hearted is something you feel in your heart like you *should* be.
a synpath is something that you feel a connection with or empathy for, like you’re the same.
Fictionhearted is the right term if you share traits/the character resonates with you but you don’t feel like you ARE them, but a separate person.