Oh, that's nice, Tsukishima's hands on his skin under his shirt. They're just that bit cooler than Kuroo's skin, enough that he can feel each one of Tsukishima's fingertips.

"Mm, maybe you shouldn't. But think of all the nice things I could do if you did let me." He's certainly thought about them enough himself, maybe he's being presumptuous to imagine Tsukishima would have too, but he slips his hand down to rub once against Tsukishima's crotch to possibly give him some idea, just in case.