[Sion moans against Naoto's lips when he digs his fingernails in, uses that as a good indication of how to move. Adjusting accordingly until he's getting that reaction regularly, fingers tightening around Naoto's where they're holding hands.]

[He licks his lips, wetting them, ending up licking Naoto's with that, and half smiles, following that with a light kiss.]

Ah... God... Naoto you're beautiful.