Introduction

Tanjiro who has become a demon by accident starts his journey with his little sister nezuko. It's not just a role swap au ,it's something more!!

What if Tanjiro has been overpowered and mastered total concentration constant breathing since he was 8 years old?

What if Yoriichi was the ancestor of tanjiro Kamado?

What if the drug to turn a demon into a human was already made?

And what if their brother Takeo was still alive?

Read out to find out..

The cover and the other pictures does not belong to me......