The Unknown Hashira (Demon Slayer x Reader)

There has been a rumor that the amount of hashiras isn't that small. That the hashiras are 10, and not 9. This rumor started years ago and has not been proven or denied, no one knows if this rumor is just made-up, or if it's the truth. You would think that the hashiras already shut down this rumor, but no, they didn'...