LearRyner's manga / #Threesome(40)

Renting apartments alone, Jae-young lived quietly until an old friend/neighbor appeared in his life. Unlike the good-natured Tae-young, who is glad to meet, Jae-young reacted differently, without showing his hospitality. Will the old grievances be remembered or will the new ones be born? BDSM passion, triangles and more in the room "1305".

Summary 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!?