Synopsis: Reika Shichijo was a student at the top of her class, until one day she suddenly became a dropout. Now she is responsible for her classmate Niimi-kun’s sexual pleasure to help him “study” better.
In this world “Dropouts”, those who have failed to be admitted into the university, are forcefully made to work. Especially beautiful students are obligated to pursue sexual labor AKA become sexual servants to the rest of society.
Reika becomes the sex slave of one of her former classmates, Niimi-kun. She is now tasked with relieving his sexual tension, so he can study better. During their time in school, Niimi-kun will have to adapt to his senpai becoming his new “study” partner, find out why and how she became a dropout and deal with the jealousy of his peers, especially Reika’s ex-boyfriend, Shiroshima.
Alternate Names: ドロップアウト
Aired: Feb 26, 2016 to Mar 25, 2016
Producers: EDGE 
Source: Manga