In Kamen Rider Zero-One 15, Izu's life hang in the balance as Aruto faces off against a serious threat with... ANOTHER new upgrade. This isn't the synopsis for episode 13, though they do sound remarkably similar.

In Kamen Rider Zero-One 14, Isamu stakes his claim that RAGE is the only thing that can sustain him until he destroys Metsubojinrai. He unlocks Assaul Wolf goes wild!!

In Kamen Rider Zero-One 14, Isamu stakes his claim that RAGE is the only thing that can sustain him until he destroys Metsubojinrai. He unlocks Assaul Wolf goes wild!!

In Kamen Rider Zero-One episode 13, Izu puts her life on the line to complete Shining Hopper do Aruto can defeat Dodo.

In Kamen Rider Zero-One episode 13, Izu puts her life on the line to complete Shining Hopper do Aruto can defeat Dodo.

In Kamen Rider Zero-One episode 12, Dodo breaks out on his own, Aruto is on the run and Izu pushes away her heretofore unknown big brother.

In Kamen Rider Zero-One episode 12, Dodo breaks out on his own, Aruto is on the run and Izu pushes away her heretofore unknown big brother.

In Kamen Rider Zero-One 11, Yaiba steps forward in a big way… and introduces Aruto to Amatsu Gai… the head of ZAIA Enterprises.

In Kamen Rider Zero-One 11, Yaiba steps forward in a big way… and introduces Aruto to Amatsu Gai… the head of ZAIA Enterprises.

In Kamen Rider Zero-One 10, Yaiba and Fuwa's relationship shifts, Little Assassin grows and Aruto swaps weapons with Jin.