[A breathy giggle rises from his throat at the insult. Because it's his own body, Gon can read the signs. Just by the way he tenses up, he can tell his boyfriend is almost there.

Close, Killua~? I can tell.. [He asks, speeding up his hand.] You're doing so good. [He puts his all into his work, focusing on the head of his cock while he sinks into his lover's kiss. Being able to pleasure him like this makes him happy. This way, Killua can feel every bit of electric ecstasy that he brings to Gon, even when they're apart.

Killua's body, too, is bursting with pleasure. Even a bit of stimulation from his own butt sets his brain alight. He roughly humps into it, holding Killua's ass there tightly to receive each burst of virile energy. Gon lets out a pained groan against his lover's lips, distressed from being held in such restrictive boxers.]