???: Wha-. What is this? (cry in fear trap in some glass cover)
???: You are our experiment.
???: Me? Experiment?
???: Yes. We need you boy.
???: Let me go! Please I won't tell anyone!
???: I'm afraid not. (a man appear) You see we need your help.
???: My help?
???: Yes. You see we are trying to make a new empire. Where we control humans, and humans serve us.
???: YOUR MAD! (start to struggle)
???: (giggle) Are we or are we not. (appear in front of him) My name's Nightrogue. And I assist you help us.
*Several minutes later*
Nightrogue: Don't let him escape!
???: (running and breathing) Help me............ HELP ME!
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Okay, so let just say this. The reason why this is a prologue, is because the series, Kamen Rider Build didn't start yet. And by the time I'm writing/typing this, this is the (probably) final Heisei Rider season. Don't believe me, read Kamen Rider wiki of Kamen Rider Build yourself.
And yes I'll be doing my best to get the other rider stories out to. I'm sorry I haven't work on the other rider stories that much, but I'll get them done for you.
Thank you, and enjoy this series. :)