Kouto, with the help of his classmate, used an "Onee-san Rental" service to help himself study. But helping him study was all a formality, and the next stage is all about studying lewd things...!?

Other "Onee-san Rental" stories include:
- Rito chapter: featuring a malicious boy, who tried to have sex with an older girl who was supposedly hired to make a cake;
- Uzuki chapter: featuring a cowardly boy who hired an older girl to keep him company so he isn't watching over the house by himself;
- Kei chapter: featuring a boy with a sweet tooth who hired an older girl to accompany him so he can secure the limited-time sweets he wanted;

4 chapters included! This story is all about various boys renting an older girl to do various lewd acts with. OneeShota femdom with no domination loss, no penetration.

(Source: DLsite garumani)