Uppermoons

While the twelve moons and Muza are calm in the Infinite Dimensional Fortress, you are somewhere in the forest
Muzan is sitting on a couch while reading a book
Gyutaro and Daki were gossiping while Akaza and Douma were arguing, Kokushibo and Kaigaku were trying to calm them down, Nakime was playing a soft melody with her biwa, Gyokko was chatting with Enmu, Rui looked curiously as Hantengu was hiding under the table, while Sekido, Karaku, Aizetsu, Urogi and Zohakuten were chatting
Suddenly, Muzan frowns, slams his book shut, and stands up, drawing the others' attention
Muzan:"I feel the presence of someone...dangerous"
Akaza raises an eyebrow
Akaza:"A demon hunter or a Hashira?"
Muzan shakes his head, Rui scratches his chin
Rui:"So what is it?"
Muza sighs
Muzan:"It looks like he's a demon"
Daki is startled
Daki:"A dangerous demon?"
Douma giggles as he fans himself with his fan
Douma:"Mmm, but if we are the twelve moons, how can another demon be more dangerous than us~?"
Kokushibo gasps
Kokushibo:"I also feel that presence...it's unknown but dangerous"
Gyutaro looks vaguely at the others
Gyutaro:"It may just be a false alarm"
Nakime and Gyokko just listen as they mutter amongst themselves, Hantengu lets out a squeal
Hantengu:"Wah! His presence is overwhelmingly terrifying!"
Kaigaku squints
Kaigaku:"Should we go see?"
Enmu thinks
Enmu:"I don't think it's necessary"
Sekido snorts
Sekido:"Tch...how annoying"
Karaku just lets out a small chuckle
Karaku:"Well, let's see who this mysterious presence is."
Aizetsu just has a sad look
Aizetsu:"I don't know if it would be a good idea"
Zohatuken just stares at the others with his arms crossed
Zohatuken:"We should see what he wants."
Urogi looks around, thoughtful
Urogi:"Well, we should listen to Mr. Muzan."
[Describe your OC]