K-Sensei no Himitsu no Netsujou
Our Addictive Carnal Games
Haruki is a school nurse by day, natural-born manhunter by night. Lately, though, he hasn't been able to catch any prey (he is into older man and does it with them). As his frustration reaches a boiling point, he is approached by a mysterious young man named Shion. "Give it up. I'm only gonna stop you." Haruki laughs this off, believing it to be some kind of immature revenge plot. Shion seizes this opportunity to push Haruki down and bind his hands. In a state of rapture, Shion says, "I've been told I'm pretty good. So, all you gotta do is sit back and take it." Despite not usually being on the receiving end, Haruki can't help but lose himself to the pleasure...!" Shion comes to see Haruki in the nurse room which Haruki finds out that Shion is actually 17 and not 27. Shion says he is fine with him doing it with other as long as Haruki doesn't get banged by others except Shion and so they have sex and stuff start
K-Sensei no Furachi na Junai