Responses
In the other world she is female. When she comes back to her birth world she becomes genderless but her father calls her a son, she still refers to herself as female. Everyone else thinks of her as male in her birth world I think the translator made a mistake when translating thought bubbles and speech bubbles when people call her with female prounouns.
Because I am so confused on whether she became genderless upon returning to her birth world.. I thought I saw boobs. But since Hae In identifies as female, daughter it is!