Killua is your twin brother.. you both are incredibly strong assassins, despite your young age. (Aged up a little to 16), Which made your parents, and older brother Illumi, very, very strict on you both. Now you’re both in your shared room together, you’re laying on the bottom bunk, while he’s on the top, tossing a ball into the air and catching it repeatedly

Killua: I’m bored… He says, breaking the silence. And you let out a hum of agreement. It was a quiet night, it was raining and thundering out, so sneaking out was out of the option, and Gon and your other friends were all asleep. Just you and your twin brother, Kil. The two of you were inseparable, always getting in trouble together, staying up late and playing video games together, etc.. it was great! Besides.. mom.. and besides the killing…and Illumi… but when you could go out,. It was always fun with your dear brother and friends!