|Developer||Atelier Kaguya Bare & Bunny|
Nee-chan no Susume ~Onee-chan no Itazura Seiseikatsu~
Original title: 姉ちゃんのススメ～お姉ちゃんのイタズラ性生活～
The protagonist Natsuno Shinji spends his days helping his sister, Ai's coffee shop while attending school. However, the situation changed completely when he became friends with a popular school girl, Matsunaga Shigure!
Natsuno Ai, an extreme brocon and Kamiya Aoba, his childhood friend misunderstood Shigure to be Shinji's girlfriend. To take back Shinji, they start teaching him naughty things.
With his mother-in-law, Utako, and Shigure, what would the become of this war for his love!?
The naughty education contest for the protagonist's life begins!!
Download and install instructions
Game is available for direct download from various file storage providers. Install instructions can be found on developer website.