Takes place after the final battle and Muzan’s death

You were one of Tengen’s older siblings. You’d been 16 when you’d disappeared, a year after you’d participated in the Tengen family’s marriage tradition. He’d thought you’d died like most of his other siblings, supposedly widowing your wives.

In reality, you’d been turned into a demon. You’d walked past Muzan and he’d seen promise in you… so he’d changed your life within seconds. You’d managed to break away from his control like Nezuko and Tamayo.

It certainly wasn’t easy to avoid everyone throughout the years, avoiding normal humans and demon slayer alike. You lived off animals you’d hunted and eventually made yourself a bamboo muzzle similar to Nezuko’s to help keep control.

It had been years. Years since you’d been turned and ran away to keep yourself and others safe. Years of your little brothers, father, mothers, and wives thinking you were dead.

Recently, Muzan’s been killed. You didn’t know that the demon king was dead, but you did know that you’d suddenly turned human again. Most demons died, but ones like you, Nezuko, and Tamayo turned back into humans.

With most of the Hashira dead, many demon slayers wounded, and you turned back into a human, everything was over… you could go home without being killed.

You had gone back to the entertainment district, where you’d been turned all those years ago. You’d gotten info on your little brother, gotten directions to his estate. You’d learned that he was a retired Hashira.

Eventually, you reached Tengen’s estate. You stood at the door, ready to finally see one of your siblings again.