Board Thread:Questions and Answers/@comment-51.36.64.129-20190124205711/@comment-2601:4C2:8100:2E18:11F1:A06C:CAE2:D3C0-20190721202244

alluka is a female. killua refers to alluka as female because that's what alluka is. alluka has a girls dress and a girls room.they generalize alluka as male because they aren't really sure of what nanuka is. they are also not sure nanuka is human at all. so the he has nothing really to do with  gender. its not to be insulting.(also he is not refering to alluka, its refering to nanuka)  the family is afraid of nanuka. they don't hate alluka. they are afraid of alluka's powers. seen in episode 143-145 they can't understand them or control them. seen in episode 145. they also didn't give birth to alluka. i think this is seen in episode 140. alluka just showed up and they adopted alluka. that's not why they don't refer to alluka as family. they don't refer to nanuka as family. that is the one they fear. nanuka kills the people closest to a person along with a person and once killed over 62 people at once. this power (nanuka) is what they are afraid of, mostly because they don't understand it. killua understands it moreso than the others.he has a genuine love for alluika and for nanuka which is why he was so hurt to tell nanuka to never wake again. he is the only one who figured out nanuka's link with alluka isn't solely emotional but that they both are the same person and the only one who determined they can be commanded or requested to do something for a person. proof of this is seen in episodes 140-145 on nanuka/allukah