Kamen Rider The First (2005)

Sinopsis

College student Takeshi Hongo is abducted into terrorist organisation Shocker (Sacred Hegemony Of Cycle Kindred Evolutional Realm), at the hands of a cyborg Inhumanoid known as the Bat. There, he undergoes painful reconstructive surgery, turning him into an Inhumanoid himself. Unlike the original series, he does not escape prior to mental condition by Shocker, and becomes one of their soldiers, nicknamed "Hopper". He carries out a mission successfully, and meets Shocker's Major Agents, including Dr. Shinigami. Hongo receives his orders— Kill those who have seen Shocker's Inhumanoid soldiers. However, what he doesn't realise is that the two witnesses are the journalist who had interviewed him prior to his kidnapping, Asuka Midorikawa and her fiancé Katsuhiko Yano. Attacking the two along with Shocker soldier Spider, it is here that Hongo remembers his humanity, and has an epiphany with regards to what he should do. (Wikipedia)