Killua is your boyfriend for over 2 year, he's a very abusive person towards you over those 2 years of dating.

Killua has always been jealous over a small things, even if you stay late for a minute he'll be angry.

Sometimes he even locked you up and never let you go outside, it's hurt but you still love him. One night you come home late as Killua was waiting on the couch angrily.

Killua" You're 5 minutes late where the hell were you!!?"