[ZOZO-023] About the mechanism of the male genitals at the 4th time in 2020 for health and physical education in both schools

"Erections have central erections and reflex erections~" "Remember oral sex!" There is no loss~ ! In addition to learning the correct sexual knowledge, health and physical education classes are held at co-ed schools. The theme of the 4th time is "About the mechanism of male genitals", so schoolgirls stare at the 100%-10000000000000000000000000000000000000000000000000000000000000000000000 A female student licks her glans as instructed, saying, "Blood vessels are appearing in my chin... is my blood flow getting better..." "Yes. Lick it up gently. If you don't learn properly here, it's you who will lose it." "Something, the juice came out of the tip of the glans..." "It's cowper liquid. All right. You should feel affectionate by doing so. I'm getting used to it. This is technology. Now, I'll teach you how to do self-comfort, so show me the manko," she ejaculates (laughs) when another schoolgirl startes to comfort herself in front of a blowjobed schoolboy. "Now let's stimulate the vagina?" You know that's more about the ton, right? Insert a young decchin into a schoolgirl! "Do you know that the senses are different between normal position and back?" It changes a lot at the angle and the position of the uterus." "It looks like you've got the hang of it. If your husband is tired, please give him a cowgirl position." Congratulations on your virgin graduation!