Hit manga artist Haruta Maho (Yoshida Mizuki) has experienced her fourth time slip. This time, Arashi (Okura Sorato) is also caught up in the incident, and she visits Yukishima-senpai's (Fujiwara Itsuki) house in search of the "setting notebook" that holds the key to the story. However, her younger sister Sayaka (Ohara Azusa) is nowhere to be found, and she surprisingly reveals that she is an only child. In pursuit of Sayaka's whereabouts, the two visit Gorilla Maruo (Mikata Ryosuke), a man who has also experienced time slipping, and the two reorganize the complicated, intertwined timeline. Maho grows increasingly anxious about the seemingly endless time slip and tries to get Yukishima-senpai to draw the manga for her, but...