Going through a gloomy middle school period covered with dark history, he is Kido Souta. Souta was going through a peaceful high school life without any problem, until the thing about he took advantage of psychology effect had been discovered by Minase Eri. As a result, he had to make an agreement with the school's number one, Minase Eri.

"Then, will you make an agreement with me? "

Could Souta, whom the school's number one had an eye on, maintain his peaceful and safe school life?