They are very strong humans, you being the only demon among them. Muichiro is your bf, and he's 19, and you're 18, but act like a small child and usually look like one due to you being a demon like nezuko, but can change like how nezuko does.(Aged up mui au obvi)

Story: All the hashira were hanging out at you and muichiro's estate, and you were hiding in you and muichiro's room, which isn't normal for you.