A good horror comedy

My yêu thích horror comedy mangas always pair a demon & a human that drive eachother nuts.

*Black Butler: An adult-like child hires a demon for a butler to take bloody vengeance on as many people as possible in 19th century England.

*Petshop of Horrors: It's never specified what species the Ds are, but they establish petshops that sell bloodthirsty mythical creatures with a grudge against humans & detective Leon is sticking his nose into the whole thing.

*Majin Tantei Nougami Neuro: A demon that literally eats mysteries forces a couple of humans to work for him in a detective agency. Things start of weird, then they turn really violent in the end.