My Friend's Dad's a Hunk 19

Akira pushes himself too hard at a swim meet and ends up nearly sleeping with the fishes, only for his unlikely savior to be none other than Masaaki. While recovering in the nurse’s office, Akira seizes the opportunity to stand up to Masaaki and put his foot down about the favors he’s been making him do, but the latter doesn’t take it well, laying down the law by leaving a bright red, stinging print in a rather sensitive place. Later, when Akira meets with Yuusuke, he has to scramble for a way to hide the embarrassing mark.