[He shouldn't laugh. He shouldn't, and yet the sound bubbles up and out as he slides his hands up and down Katsuki's back, relishing the touch of bare skin.]

You did a lot more than that. And I kind of helped, didn't I? So don't worry about it. They'll wash. It's fine. I don't regret it at all.

[Far from it, in fact. He feels amazing. So incredibly relaxed and lighthearted, like everything is just bathed in a soft warm glow. How has he never felt like this before? And in a related vein:]

We should do it again sometime.