His reactions were..fascinating to her. Encourage by his reaction, Chinatsu let's her finger trail along the underside of his shaft up tp the tip, then pressing her palm against it, slowly rubbing against him. She could feel him twitch and harden against her hand, the water making it easier to slide against.

She doesn't lose any focus on the kisses, of course, teasing him between her teeth, plucking at his lips before capturing them again. Their breaths only getting hotter the more they touched each other.