Daisuke Ryuuzaki

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 university, are forcefully made to work. Especially beautiful students are obligated to pursue sexual labour 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.

The series takes place at a special mansion that transforms all who enter into beautiful women. After hearing rumors of a treasure within its walls, a man enters...

Housewife Airi’s life is a rather boring one. As she sorts and washes her daughter Aya’s laundry, she suddenly chances upon some particularly saucy garments of her daughter. Clad in these, wearing make-up and a wig, she leaves the house to go shopping for some limited-time deals. As Airi still has too much time before the sale starts, she decides to spend her free time in a karaoke bar. Following an invitation from Youichi and his friends, she does not need to show her ID, which is very convenient for her. Thus, Airi now has the opportunity to let off steam and for Youichi and his friends this also promises to be a fun ordeal…