The tutor of the main character, Masato, was a ``childhood friend and a naughty sister''!
Hina Shinjo is a celebrity older sister who has a bright mind, beautiful eyebrows, and the worst personality.
Serina Shinjo is a junior high school student with a selfish personality and body.
Masato was constantly being oppressed by the two of them and was already fed up with his life.
One day, Masato meets Sakiko Ichinose, the owner of the secret club "Gentildonna", and she hands him the ○○ device.
It is said that by using it, it is possible to freely manipulate a person's mind and body.
Revenge on the Shinjo sisters...When he casually tries it on Serina, its effectiveness is so great that he can't resist it anymore.
Masato manipulates Serina to his will and makes her absolutely obedient as a sexual outlet due to his past grudge.
He then gives orders to Serina in order to trap the next target, Hina.
主人公・真斗の家庭教師は「幼馴染の性悪姉妹」だった！
頭脳明晰、眉目秀麗、最悪な性格を併せ持つセレブ姉・新庄陽菜。
ワガママな性格と肉体を持つ隙だらけJD・新庄芹菜。
二人からは常に虐げられ、もう生活に嫌気がさしていた真斗。
そんなある日、真斗は秘密クラブ「ジェンティルドンナ」オーナーの一ノ瀬早季子に出会い○○装置を手渡される。
それを使えば、人間の精神・肉体を自由に操れることができるという。
新庄姉妹への復讐…さりげなく芹菜に試してみるとその効力は絶大で、もう逆らう事ができなくなっていた。
真斗は、今までの恨みから性のはけ口として芹那を意のままに操り、絶対従順させる。
そして次のターゲットの陽菜を陥れる為に芹菜に命令を下す。
