Is jang hayoung a girl?

Her old body and soul are of a girl but her current body is a boy

Jang Hayoung is a boy.
When kim dokja was commenting, he shared his opinions about how there should be a new character and made some ideas about his own unique charcteristics and wanted it to be a girl. Author made his ideas into reality and really made jang hayoung except the author didnt made jang hayoung a girl but instead, a boy.

I always think of her as a trans girl so yeah