D.Gray-man

Kanda, Marie, and General Tiedoll arrive in Czechoslovakia where they meet a man named Klaus, who tells them the history of Jan Novak's famous mansion. The exorcists soon discover a trio of Level 2 Akuma who lure them into Jan's mansion, and utterly, a trap. The mansion is full of tricks and twists, along with hoards of Akuma to fight if you're not careful. With Tiedoll curiously poking around and Klaus' interference, Kanda and Marie have their hands full just protecting them.