
First of all,,, she is a girl. She is not gender less because her mother is a half elf. When she came to her own world and got in touch of her father, her upper body became like this but her lower part is still same. (Oh I really hope she gets her boob's back, flat chest really hearts. Only girls will know the pain(/TДT)/ )

We all know she is half elf,,, but is she a girl? I'm really confused,,, her father calls her son though?!

Spirits have no body parts that define them as either female or male. When she was in the human world she has the body parts of a female and grew up one so she identifies as one but her father brought her to a different world where she transformed into having no body parts so she was neither female nor male. Idk why but her dad just calls her his son even though she doesn’t have the body part of either. She identities as female though so she considers her self one still despite not having the body parts. Hope this kinda helped
Blue elf? Just love him ヾ(☆▽☆)