Haruta Maho (Yoshida Mizuki) is a 26-year-old popular manga artist who was serializing the smash hit "Revive Line". However, at a manga award ceremony, she suddenly gives a shocking speech saying, "Revive Line is not something I created." During high school, Maho joins the manga club to draw her favorite manga, and there she meets her senior, Yukishima Shu (Fujiwara Itsuki). Inspired by Yukishima's passionate manga drawing, Maho also starts drawing manga. However, one day she receives a sudden phone call from Yukishima's younger sister, Sayaka (Ohara Azusa)... 10 years later, Maho has grown up with a certain "regret", but what is the true meaning of her shocking speech? And what is the secret hidden in "Revive Line"? Furthermore, after the award ceremony, Maho accidentally travels back in time to her high school days...!?

Haruta Maho (Yoshida Mizuki), a hit manga artist who gave a shocking speech at a manga award ceremony, sneaks into her alma mater and ends up traveling back in time to her high school days 10 years ago...! The day she traveled back in time was the day that Yukishima Shu (Fujiwara Itsuki), a senior in the manga club, first praised Maho's manga. Knowing that Yukishima has only a short time left to live, Maho uses the drawing skills she has cultivated over the past 10 years to assist Yukishima in drawing "Revive Line" as quickly as possible and having him see it published as a one-shot. Although the work is complete, Arashi Kagemasa (Okura Sorato) from the student council comes to the manga club room, and a new problem arises.

Haruta Maho (Yoshida Mizuki), a hit manga artist, time-travels back to her high school days. She tries to help her senior in the manga club, Yukishima (Fujiwara Itsuki), make his debut as a manga artist, but he collapses earlier than he remembers before the time-travel... As Maho sorts out the timeline to solve the mystery, she suddenly returns to September 1, 2015. In her second time-travel, she proactively solves all her previous mistakes, but Arashi (Okura Sorato), a member of the student council, sees Maho and becomes suspicious.