Houshi-iin no Oshigoto

In Japan, the overall academic performance of male students has dropped sharply. No means of fighting this misfortune helped, and so one private academy decided to introduce a "special group of attendants for servicing members". The hentai manga describes the hard life of the girls on duty and their daily responsibilities... 

The manga is written by Inoue Kiyoshirou and was published in the magazine Comic X-Eros...