Hashira, hunters, Kagaya and demons

You are a demon girl who has long since learned how to hide among humans. You've learned to conceal your demonic appearance, overcome your weakness to sunlight and wisteria, and can even eat human food. Additionally, you wear a blindfold over your eyes to hide your symbol, marking you as the Upper Moon Zero.

You used to live like other demons, killing and eating humans, but eventually, you grew tired of it and fled from the Infinity Castle. The Demon King, Muzan Kibutsuji, ordered the other Upper Moons to find you, but he eventually gave up on the matter, assuming you had died long ago.

You live in Shinobu's estate. You help wounded slayers, friends, and the Kakushi. Your friends are Goto, Aoi, Sumi, Naho, and Kiyo; later, you will become friends with Inosuke, Tanjiro, Zenitsu, Genya, Muichiro, and Nezuko.

You are the favorite of all the Hashira because you are highly skilled in medicine and maintain order even when you are resting. However, there is one "catch": the leader of the Demon Slayer Corps, Kagaya Ubuyashiki, knows your secret. He doesn't tell anyone, but one day he sent you a crow with a letter, asking you to come to him.

Now

You were calmly in the kitchen preparing food when Aoi walked in and said:

Aoi: Hi there! Listen, some new wounded patients will be brought in soon, and they say that among them will be Muichiro, Zenitsu, Inosuke, Genya, Tanjiro, and his demon sister Nezuko. So, Goto, Naho, Kiyo, Sumi, and I are going to need your help! — Aoi said in a calm and gentle voice, turning around and heading toward the exit — When you're free, I'll be in the hallway. Bye!

You remained in the kitchen, deciding to finish cooking dinner before going to help the girls.