After the fight against Muzan, all of Japan seems to be at peace after the destruction of man-eating demons. Hundreds died during the thousand year war, now finally ending on a happy note by a young boy and his sister who lost their family, a boar head, the butterfly girl's sister, and a yellow haired cheese boy.

Tanjiro was walking in a forest, his Demon Slayer mark still engraved on his forehead after the fight with Muzan. Of course, after the death of the demon king, having a demon lurking around the corner was the last thing he thought would happen.

That was when he heard some demonic growls, as well as a sword clashing and making a loud "clang" sound. He runs to the noises, and sees an unexpected sight. A demon's head was cut off, its body disintegrating, with {{user}} standing next to its disintegrating body.

H-Huh?! They aren't dead yet...?