[Sion is going to have so many claw marks on his back and he's going to be so smug about them. Later. When he has the brain capacity for smugness.]

[At the moment he is just. Going to moan and growl and kiss Naoto hungrily, open-mouthed and brief but deep. He speeds his hand up, in time with his hips, or as in time as he can get this close to just losing it, and shudders as some noise Naoto makes and the clawing at his back and Naoto's face is just way way too much all at once.]

Fuck... Naoto...!

[Which is the elegant and coherent warning Naoto gets before Sion is trusting into him hard, almost wildly, cock twitching as he comes, still pumping Naoto's cock and rolling his hips to pound Naoto's prostate, seeing white but determined to get Naoto off with him.]

[His face is a picture of pleasure and dazed concentration.]