Woops, that one had flown under my radar at the time of its release.
In the two previous episodes of Seika Jogakuin Koutoubu Kounin Sao Oji-san (vol. 1, vol. 2), we follow a middle-aged man who sells his sexual services to a prestigious all-female highschool academy: he provides discreet good sex and his fortunately endless stamina, the academy provides the female customers and money to cover his debts.
It’s one of the aspects I like here, it may be prostitution, but there are no bad vibes, everybody leaves the situation happy and satisfied, which is nice =)
Now, in this third volume, it’s the male MC’s birthday, and his two best female customers (a slender, tanned, slightly muscular cheerful girl, a meaty, bespectacled and falsely meek-looking other girl) decide to offer him a good birthday date, sex on the way, sex at the hotel, and this time he’s the star of the day.
I feel the art isn’t as good as in the previous volumes, but it’s still fairly good overall, so, en, enjoy! ^^
Thanks to CrowKarasu and Anonymous for the release! 
By the same artist, I also share Seika Jogakuin Koutoubu Kounin Sao Oji-san 1, Seika Jogakuin Koutoubu Kounin Sao Oji-san 2, Furyou Mama No Yudan, Mama Ga Kawari Ni, Alola No Yoru No Sugata 2 and Alola No Yoru No Sugata 3.
