Boss, You Can't Cum! -I, Violated by a Strange Disease-

Masaki, the beautiful young boss of the Ooe Group, suffers from a certain disease. That diease is called Erotic Disease, a terrible illness that will drive him mad if he isn't always having sex with someone. Masaki is preserving his sense of self through his strong willpower, but that's only because he sets aside time for the sexual intercourse he calls "treatment." Then, one day, Kenji, who got caught up in a gang war, falls in love with Masaki at first sight! He proposes new promiscuity on top of Masaki's treatment! As a matter of fact, Kenji is the owner of a first class you-know-what...

(Source: Renta!)