Misuzo, a teacher at the private Seishiki Academy, is pure and charming, passionate about education, and popular among students. She was appointed as an executive committee member for the annual school festival, 'Sesei Festival,' and was diligently preparing for it. However, Misuzo had one concern: the 'H' class, labeled as "dropouts." With the lowest grades in the academy, they were known as 'The Sweepings of H' and 'Perverted H.' Misuzo strives to reform them through participation in the school festival, but the students plot lewd events to toy with her intentions...
