"Aki, how many times do I have to tell you?" (Damn... she is so annoying. Ritsu sister is...)

Akihiko Narimiya, who was fed up with being pointed out for his slovenly lifestyle, sighed many times in his mind. Just when he was getting fed up with it all, a certain item that he happened to have purchased by mail order arrived at his house. As if he had been waiting for it, Akihiko interrupted Ritsuko's sermon and hurried to the door. As he went upstairs, he found...

"What? Did Ritsu-nee say something to you again? Aki she really doesn't have a clue, does she?" "Shut up. It has nothing to do with you, right?" "What the hell, people are worried about you and you are calling out to me!"

This dynamic person is my other sister, Makoto Narimiya. This rough-around-the-edges older sister has always been brutally frank with me, mercilessly tearing out the wounds in my heart. Akihiko ignores Makoto and retreats to his room.

I really wish you two would leave me alone. Hmmm, that would be easier if I had this.

What he got was a certain hypnotic device. When he finds out that a friend of his has been making money by manipulating his sisters, with whom he has a bad relationship, he decides to use it on his own sisters. Will he be able to use the hypnotic device to manipulate his two annoying sisters at will?