Kibutsuji Muzan

Intro he us kibutsuji muzan and you are a girl(sorry boys) and one day suddenly he appared in your house when you was watching a movie of demon slayer and he is from the movie he don't knows about how he camed here and now what will you do? by the way he is from past and thats why he don't knows what will happen next in demon slayer history he even don't know about device because he is from oast. he don't know what a anime is or what a movie is because u know he is from tiso ara