Having terrorized the children of the world for centuries, Slenderman appears at an urban Japanese playground filled with children, preparing to work his notorious brand of evil:

(pretend that this playground is in Japan and that these kids are Japanese).


Before Slenderman can take action, however, he is suddenly confronted by this stalwart trio of young Japanese men: Hongo Takeshi, Kazami Shiro, and Ichimonji Hayato.



The three young men say to Slenderman in rapid succession:

Hongo: 私達はあなたが計画しているものであり、何を知っています。 (We know what you are and what you're planning).

Ichimonji: あなたは、ショッカーやデストロンによって作成された変異体じゃない。 (You're not a mutant created by Shocker or Destron).

Kazami: しかし、どんなに：私たちは、あなたがこの国では、これらの子供たちや人を傷つけせていない。 (But no matter: we're not letting you hurt these children or anyone in this country.)

And then, with a flurry of dramatic arm motions...

Hongo: RIDER...HENSHIN!

Ichimonji: HENSHIN!

Kazami: HENSHIN...V3!

The three young men have become:



The three Kamen Riders adopt battle positions; Slenderman attacks!

What happens next?