The frantic noises were a nice affirmation, and less than a minute after the second to last customer left the room, Sengo let himself lose control, spurting inside her for one long thrust before he pulled himself free again, painting her ass, and pushed just the tip of his cock into her ass to spill the rest there.

Or almost the rest. Just before he was done, he pulled out of her ass as well, and turned, the last of his load spattering Yukiko's ass as well, albeit from a bit more of a distance.