[MaskedRiderAsakura]

I've had this idea in my head for YEARS.

It's a post-apocalyptic wasteland, and one village of people managed to find one of the last habitable cities in the world, which they name "Sanctuary". These people inhabit this city and fortify it to protect from outside threats, and raise their kids in the city, sheltering them from life in the wasteland and effectively creating a utopian society. There's one boy and his sister who have always pondered about life outside of Sanctuary and despite persistently requesting that their father let them explore, he commands them to stay inside. One day, raiders attack the village and the boy and his sister are forced to flee to the outside world, and are saved by a cyborg ninja named Kokurai.

Kokurai is basically a Kamen Rider homage. He was a man turned into a cyborg, and his new cyborg body helped pave the way for the Sentinel gear, a technological advancement that would temporarily change its user into a cybernetic armored fighter. Kokurai, during testing, was forced to kill 10 other people who were modified in different ways. This experiment was done to test out who had the most powerful armor. As the story goes on, the murders he's committed and his cybernetic body cause him to steadily lose his humanity, and begin transforming into a robot monster. Upon escaping the corporation, he manages to steal 6 of the Sentinel gears, handing them out to those he deems strong enough to help him take down the corporation, so that he may finally have his revenge.

One of the receivers of the gear is an older man, who was alive from before the apocalypse came. Wanting to take down the corporation himself for all of the evil they have caused, yet feeling that he may die soon, he mentors the young boy, who reminds him of himself when he was younger, so that the boy can succeed him.

The gears are handed out to other people, including his sister, and one thing worth noting is that as Kokurai hands out these gears, the people who receive them (including one of the main antagonists of the series) become more and more amoral each time, symbolizing how his gradual loss of his humanity causes him to care less about the moral character of the people he recruits. Regardless, the boy, after ascending to a role as team leader, tries to get them to work together for the greater good.