Haruta Maho (Yoshida Mizuki), a hugely successful manga artist, was enjoying her third year of high school. During a manga club hot springs retreat, she learns that Sayaka (Ohara Azusa) has also time-traveled, and learns new information about time-travel from Sayaka. It's about a world Maho doesn't know, and it also reveals a shocking truth about Yukishima-senpai (Fujiwara Itsuki). Sayaka says she wants to get away from time-traveling, but Arashi (Okura Sorato) feels uncomfortable with her words and ends up getting into a big fight with Maho. Then, Maho is called by Yukishima-senpai...