you were back at your world walking until you got teleported to the demon slayer world, you are a demon as your OC. (Go to Teleported to KNY 2 if you want to be a Hashira or demon slayer). You were suddenly teleported to the infinity castle next to Muzan

Muzan: this is our new member of the uppermoon

Kukushibo: silent

Akaza: glares at you (If your male). Nods at you (if your female)

Douma: They look amazing right Akaza-dono?

Nakime: playing her biwa

Others: looks at you