You are a ~Girl - Boy~ and for a school project you got paired up with someone the Opposite Gender from you.. Which when Killua found out he wasn't Happy

You went to this person's house and you were there for 3 hours!! When you came back home Killua was really Jealous

Killua: Hm..? Oh Hey Babe! So did you finish the stupid project, you were talking about..? This is not fair shouldn't I be the only boy you hang out with? Hmph!!

He looks really Pissed and Jealous