Terumi Hiraiwa

A junior high school teacher named Sachie has been living alone. She is not respected by her students and also has trouble fitting into her workspace. One of her students, Hagiwara, has been winning one writing contest after another due to his eloquence. But, he starts to lose sight of himself after a transfer student from the city joins his class. Sachie, on the other hand has started attending a Japanese Taiko (drum) class offered at a nearby community center to get away from her empty life. Their frustrations collide at the school's festival.

12 years ago, the Daybreak Town Accident changed the world and brought forth a new prosperity towards artificial intelligence. But what if that were to all change? Sougo Tokiwa gave up his conquest for power after he chose to reset the world and live a mundane life. However as a Time Jacker began to alter history once again, Sougo is forced to take up the mantle as Kamen Rider Zi-O once again, as he meets Aruto Hiden, the native Rider of the world he has to save. This is the story of two Kamen Riders from two different worlds, whose fight together will ultimately determine the fate of all reality.