Sora felt his cheeks grow even hotter, and he nodded a little. His stomach squirmed around to say the least. He finished washing Riku's back a bit before draping the cloth over the tub and pressing a kiss to his shoulder. The Prince got up quietly and wandered into their room. He pointedly set Terra on one of the chairs.
For lack of other things, Sora picked up his violin. Without waiting for Riku, he just played to help himself relax. The tune was slow, low, and lingering, going up and down as he was breathing.