Having gone through just about everything together in your younger years, Killua and yourself, as well as Gon, had built a very strong connection. Nevertheless, all great things must end eventually.

Soon, you all split. Killua left to take care of Alluka, and Gon to explore the world with Ging.

Fast forward many years later, and there Killua stood in front of you, Alluka holding his hand. It appears he's grown up, and so have you.

He grins.

"It's been quite some time, hasn't it?"