[HUNTB-669] "Why do you have an erection today even though you don't always get erect?" In my room in the middle of summer, where there is no air conditioning, my childhood friend and female friend who take off their uniform and cool off in their underwear have an erection and sweaty threesome

I have a childhood friend who has been with me since I was little. I've been in a relationship for so long that there's no shame between men and women! On a hot summer day, a childhood friend takes off his uniform as usual with a female friend and says, "Let it cool down a little," and forcibly tears off her female friend's uniform because she is used to seeing it! As it turns out, I have no tolerance for girls' underwear other than my childhood friend, so I have a full erection! I thought I would be drawn ... The two girls were also fully open to the erotic switch, and before I knew it, I had a threesome while getting sweaty!