Hey! Thanks for your hard work. Not sure if you'll even read this, but just to let you know, for the korean manhwa, noona is for boys calling older girls. Unnie is for girls calling older girls.
Wait, shouldn't the term be "unnie" and not "noona"? Noona is boy talking to older girl. Unnie is girl talking to older girl. Unless the mutant is a boy then never mind.