I'm Muzan's Sister, but I'm in the Demon Slayer Corps

Irregular updates.

You're a corporate drone. After you die, you make a deal with a demon and arrive in the Heian period.

This time, you have a brother named Kibutsuji Muzan.

Your friends are Sukuna and Uraume.

People who make deals with demons are always a better match for the progenitor of demons.

The second time, you wake up and find yourself in the Sengoku period. This time, you're the eldest daughter of the Tsugikuni family, with two adorable younger brothers.

You have a close friend, a shrine maiden famous throughout the land.

Oh, your brother Kibutsuji Muzan is still alive. Keep trying.

The third time, the day you wake up is finally a little more normal. There are no strange demons, and you're the eldest daughter of a kendo dojo. Miss Koyuki from the Soshu dojo next door is your good friend.

Wait, why is your brother still haunting you?

The fourth time, you become the holy maiden of the Crab Legs Organization, and your younger brother, Douma, turns into a demon.

This time, you finally remember everything, and you become a demon too.

And so, you join the Demon Slayer Corps.

Theme: Stand on your own feet and grow strong