Bayonetta: Dimension Of Chaos

I do not own the characters all belong to Koyoharu Gotouge and Hideki Kamiya.

Bayonetta was on her way to kill angels and demons until a dimensional world shown on the other side. randomly popped up, why is a portal here? and what is this place? these demons are different than the other demons I've met. and these demon slayers or whatever mistakes me as their kind. shitting me right?