*killua's eyes widen as gon suddenly lets him go and kicks toward the surface like a startled frog.*

crap. time's up.

*with his heightened aquatic senses he can feel gon's panic, his frilled ears twitching as they pick up the vibrations of his rapid, air-starved heartbeat through the water. his own heart clutches in concern for him and he uses the very tail he'd just been fleeing him with to propel himself toward him, grabbing him around the waist and vaulting them both up to the surface.*