1kgpotatoes's manga / #Sadist(2)

As a popular out gay man in his neighborhood, Kiumi is a college student in the middle of enjoying the slut’s life of having sex every day with a different person! One day, he gets dragged into trouble with — and is saved by! — a closeted gay man from his same university, Kuroki Shizuno. Rushing off to Kuroki's nearby apartment (only for shelter, nothing more), breathing raggedly (from running, of course)…they’ll only do it once!! But as Kiumi draws close to Kuroki, he suddenly notices a collar on the bed and a dick thrusting against him?! Still, doing it up the butt feels surprisingly good…

Struggling college student Satou is in big trouble... He's broke. He goes to class depressed, where his friends Kaname and Yuusuke conveniently offer him a part-time job. Satou leaps at the chance without hearing the details, but of course there's a catch... Turns out he has to suffer through a lot of very special "research" and "experiments"...! This lucrative part-time job is full of some eye-opening first-time experiences, but will Satou ever catch on to their real motives!?