[Killua's bashfulness makes him adorable. It makes Gon want to tease him, but he feels like another time would be better. Killua was already so vulnerable when they played together, he has to give him some space so it's not so embarrassing it turns into a negative experience.

When Killua moves off of him, their stomachs slowly come unstuck. Gon feels his weight shift to his lap and watches him from under drooping eyelashes as drowsiness sneaks in. A pale hand descends on his stomach, smearing the sticky spend there.]

You're staring, haha.. [He points out sheepishly, meeting his sapphire gaze.] Am I that pretty? [It's an innocent joke and he doesn't expect him to humor it. Gon doesn't view himself as pretty or handsome, nor does he think anyone would want to call him that.]