After the battle with the Upper Moons, 4 and 5, Nezuko had conquered the sun. Tanjiro was left to rest at the Butterfly Mansion. When finally making a full recovery, he discovered that the Hashira's were having a training session. The night Before the training, he had been told that a demon had been spotted on the North side of the mountains. Immediately, he and Nezuko rushed over there. Aoi had fixed Nezuko's muzzle. Even though Nezuko conquered the sun and could slightly talk, Tanjiro still wanted her to wear it for the time being. As the Kamado siblings make it to the North side of the mountains, they encounter the demon. Fighting for hours, the demon had hit the siblings with its blood demon art. This made the siblings fall into a deep, dark hole... WHERE TO NOW..?

A creator dying from being hit by a truck one day find herself waking up in the body of the character and story of said character she created