Kamen Rider #1 (2016) on Netflix

Plot summary

Forty-five years after Shocker's experiments turned him into a cyborg, Takeshi Hongo has spent his life fighting the organization abroad. When he learns that a girl named Mayu Tachibana is in danger, he returns to Japan. Shocker intends to capture Mayu, and a splinter group called Nova Shocker is pursuing its own plans against the world economy. Takeru Tenkuji, the Kamen Rider Ghost, has been searching for Mayu and helps her escape, but Nova Shocker's general overwhelms him until Hongo arrives. With Akari Tsukimura and Onari, Takeru learns about Shocker's history, and Akari works out from Mayu's school uniform that she attends a university-affiliated high school. Takeru and Akari go undercover there as teachers to find out more about her.