Kentarô Kanesaki

History was reset. Everyone was reborn into a carefree high school life. But something lingers... Geiz Myokouin is going to be a judo champion. But when an accident interrupts his dream, he has to rediscover why he was chasing it - before the servants of the demon king destroy him! White Woz wants him to become the savior he was in another life. Daiki Kaito wants to take back his greatest treasure. And Sougo and Tsukuyomi just want to support their friend! But what does Geiz want? (Ununnilium)

Sougo Tokiwa is a high school boy who always dreamed of becoming a king. But then time travelers arrive from the future to kill him and prevent the rise of Oma Zi-O, the world-conquering tyrant who is heir to the power of all Kamen Riders! As Kamen Rider Zi-O, Sougo must stop the Time Jackers who are turning people into Another Riders, stealing the history of the Heisei Kamen Riders to create their own king. But can he prevent his own dark future, and still become the king he wants to be?