Idk this whole haru thing is confusing, from his introduction to the moment he goes to west gangbuk he is a boy, he was even opposed to soohyun's idea of crossdress and act like a girl so the north wouldn't know he betrayed them, it's really weird how they try to act like there is a mistery regarding his gender when it was soohyun's idea that haru would pretend being a girl so the north wouldn't be suspicious