He wasn't reserved about his own nudity, at least when it was in this particular context. He was very pale, and had scars on his back, but that was just a part of who he was, and he was comfortable with himself. His fingers finally slipped up to cup one of Sadako's breasts, capturing the nipple between two of his fingers as he rocked his hips down against her just enough to get her attention. He murmured her name into her ear, before smirking and nibbling the lobe for a moment, and leaving a trail of nips and licks and kisses down across her neck.
He trailed his hand down again, across her stomach and down between her legs, teasing one finger across the outer lips, before pressing it in, slow and gentle as he watched her expression, looking all too much like a curious puppy underneath all the lust.