Yuuri isn't some kind of immediate sex god or anything, but sex is half just listening to the other person anyway, and he's both good at that and got a good set of instincts about people, when he believes them instead of listening to his demons. Minami digs his fingers into his shoulders and it actually feels good in the tense muscles there, but he recognizes that he's hanging on for dear life and slows his hand on him, lets him get used to the feeling before he starts to move again.

He doesn't really mean for the kiss to be romantic, but it likely comes across that way, because he has to tilt Minami's face up with his other hand for it.