Reincarnated As a Character That Should Not Exist

“I wasn’t supposed to be born… so why am I here?”



I reincarnated into a fantasy novel I once read — but not as the hero, villain, or even a background extra.



No.

I was reborn as the twin brother of one of the main characters — the cold and powerful heiress of the Duke's family.

A twin who… shouldn't exist.



There was no mention of me in the story. Not even a single line.



Now, with my past-life memories intact, I know one thing: my existence breaks the script of this world.

A world of swords, magic… and yet, somehow, I awakened a power that should never exist here.



A power that answers only to me.

A power I can become.



Why was I brought into a story where I have no role?

And if I don’t belong here… what happens when I start rewriting the tale?