Wait, There’s Another Wayne?

Batman, also known as Bruce Wayne, is a famous DC superhero with great many feats and capabilities. But what if there's another Wayne? And what if this other Wayne actually posses the knowledge that this world is actually a comic world? And what if this other Wayne receives some supernatural way to power up? Just who is this other Wayne... Note: This is a training project to test my writing skill in making stories. The story was mostly inspired by the fanfic in this website titled "Reborn as Batman’s Little Brother" by "ImBreak", as well a Korean Novel titled "The Novel's Extra".