Kamen Rider: The First to Fight Monsters Bare-Handed

(The story mainly follows the TV series, with Kuuga from the start. It doesn't mix in settings from various novels or derivative fan works.)

A terrifying power lies hidden beneath the human body;

when I pick up the belt and transform into Kamen Rider, you'd better make sure I kill you;

otherwise, when I change back,

I might use some truly brutal methods!

(As for transforming, it will definitely happen, just a little later. At first, the focus is mainly on strengthening the power of the human body.)