*killua's fingers curl against the rock as gon teases the inside of his slit, drawing out sharp gasps that make his gills flutter on his sides. each movement of his fingers brings a little shock of pleasure that drives deep into his core as gon delves into it. if he'd still had his usual arrangement, he'd definitely be hard by now -- and sure enough, as gon presses deeper, something pushes back against his fingers, swelling with each pulse. killua gulps, feeling almost nauseous from the combination of confusion and stimulation.*

a-ah... something's... coming out...