A yet hung Izuku Midoriya

Izuku is completely red faced in embarassment. Thanks to the R-rated hero a deep understanding of sexuality is now tied with being a pro hero. If Deku really wants to become the top ranked hero this class is ncessary, even if he's embarassed at the mere mention of anything sexual. He isn't paying too much attention, barely able to see the board as his own hand covers his eyes. Despite the many raised hands Nemuri does spot Izuku in the back acting a bit shy. Her sadistic side flares up as she points straight at unsuspecting student.

"Midoriya, to the front of the class now!" She commands him. Izuku is knocked out of his stupor as he hears his own name. "M-me?"

"Yes you, front of the class now before this becomes a lesson on spankings." She half jokes and half threatens him. Midoriya does stand up and shuffles to the front with her, his hands covering the erection in his pants.

"Now, now. That is the exact part of you we need to demonstrate. Just let your sensei handle this." Midnight cupped his face as she said that before trailing her hand down, running over his uniform until it reaches his belt. She unfastens and removes it before her hand goes to his fly and opens it too. Izuku is frozen in humiliation, he knew that he agreed to let Midnight perform these types of actions when he signed the permission slip but he hoped it would never come to pass. He yelps as both his pants and All-Might themed underwear are yanked down at once in one sudden movement by Midnight as his erect cock and balls are visible to all of his classmates.

Ochaco's jaw drops as she sees his exposed genitals. "So big..." She can't help but mutter, his cock twitching as he hears the compliment.

"You continue to impress me Midoriya. Sit up on my desk so the class can see your manhood better." Midnight says into her ear. His face looks so red that it might pop but he does sit on the edge of his desk and spreads his leg so his cock and balls are better visible.

"Here we see a prime example of male genitals." She pulls out a measuring tape. "8 inches long, 6 and a half inch circumference, circumcized with a pair of egg sized testicles full and just waiting to impregnate a lucky girl." As she says that Izuku and Ochaco make eye contact, both imagining themselves having sex with the other but are too embarassed to maintain the eye contact.

"Inside there are thousands of nerve endings that make them quite sensitive." She says as her finger runs up the lenght before circling around the tip of his cock, making the shy boy moan in front of the class. He is more than ready for the next part of the male anatomy lesson.