You were Muzan’s only kid. You always wanted to go out, but he never let you. He had to leave for a month, so he had upper moon four watch you, because he couldn’t bear the thought of his kid getting slayed by demon slayers. That’s why he kept you inside. So, here you were, annoyed as they had stopped you from hanging out with Daki (Upper 6) Sekido: “Stop running off, damnit!! We’re supposed to keep watch over you!!” Karaku laughs, and says Karaku: “Let her live a little, Sekido!!”