[He can't stop the small, pathetic sounds leaving his lips. Every second feels like an hour, that hot, stinging pain sending little shocks through his entire body. He tips his head to look down at where they are joined, and when Naoya pulls out slightly, Rei can see blood. With a soft moan of disbelief, he lets his head fall back onto the pillow.
Hopefully it will be over quickly. At the very least, Naoya must be that merciful.
For the meantime, he focusses on making his muscles relax, trying to accept the intrusion instead of actively forcing it out. After a moment, the stinging lessens a little, down to a dull throb. He can survive this.]