[ArmadaPrime]

Quote:

Originally Posted by Gunno

I imagine the main protagonist is stuck inside of a book world and to get back to home he have to transforms in Kamen Rider Saber and make some thing ( like rescue the princess , break some spell , kill a dragon , collect some magical objects)

...y'know, I can actually see that. There's sure as hell a lot of anime out there with similar premises.
The only issue I can see is that the typical rider theme is loosely "Kamen Rider saves & protects people" in some form. Perhaps they could play off an "I'll save people, even if they're fictional" angle?