Koto, who had been a neet for almost a whole year, became a grade 10 student again in her second spring quarter of high school. She met with Shiki, who missed too much class because of illness, Tomoe, who was too unstrained and dropped the class, and Kaede, who was going to become a repeater as she always arrived late. Together with Shiki, Tomoe and Kaede, Koto was going to experience a quite unusual but interesting school-life comedy.