Popular cartoonist Maho Haruda (Mitsuki Yoshida) unexpectedly travels back to high school.In order to help the comic book senior Yukishima (Fujiwara Kiri) debut a cartoonist, she ran around, but she didn't expect that the senior fell down earlier than she remembered before her time traveling through time...

In order to find out the mystery, Zhenfan was sorting out the time context and suddenly returned to September 1, 2015.During the second time travel, she resolved all previous failures in advance, but was seen by Arashi (Soto Okura), a student union member who had been paying attention to her movements, and became suspicious.