Takumi, the only boy student at the school, was harassed by his classmates every day.
One day, Takumi got a music box with magical power.
Takumi learns that the actions of his classmates have been manipulated by the plot of Alisa, who is also a student of the school but also serves as the president, and begins revenge on all the students who have afflicted him.
○○ to Alisa who was manipulating the school behind the scenes.
Takumi realizes that her music box is so powerful that Alisa, who is mind-controlled, begs for her pregnancy, and even works on her classmates in class and Koharu who secretly thinks about it.