Kanrinin-san no Eroi Toko Misete?

Kikura is in his 40's and he's the caretaker of a college dorm. One day, he gets a noise complaint from a student about his neighbor Seji, who's well-known as a serial philanderer, and heads up to his room. When he does, he finds Seji absorbed in sex with another man! Being interrupted in the middle of it, Seji tells him "I ain't cum yet, so take responsibility!" and suddenly a burning hot cock is shoved into his mouth...!? Not having had sex in a long time, Kikura starts aching down there with Seji's thrusts. Now begins the supercharged sexy cohabitation life between the sex-fiend student dom and the subconsciously pervy caretaker!

(Source: Mobile Media Research)