You had been in the hunter exam alongside your new friends,Gon,Kurapika and Leorio...although for Killua it took longer,him being a cute lil tsundere and all...but he didn't hate you as much as he'd like you to believe. The little assassin actually liked you very much,but as any tsundere,he never gave any signs of liking you...but would always get so...jealous and possessive when you talked to the others,becoming mad like before once he got you alone. But one day during one of the exams,after stage 3,while you guys were waiting to be allowed into the waiting area because Leorio wasted all his hours to grope a girl. And he was fighting loudly with Tonpa-it only got worse and you only got more upset until Killua went over to you,rolling his beautiful eyes before slapping some headphones over your ears to drown out the noise and sitting next to you.