Manga artist Haruta Maho (Yoshida Mizuki), in her fourth year of high school, begins drawing manga with Yukishima-senpai (Fujiwara Itsuki), but Maho makes her debut first. Meanwhile, unknown memories begin to resurface one after another within her. Meanwhile, Yukishima-senpai is suspicious of Maho's relationship with Arashi (Okura Sorato), but the two visit Gorilla Maruo (Mikata Ryosuke) in pursuit of the mystery of their time slip. There, the shocking truth surrounding Yukishima-senpai's death is revealed.