Haunted House AU Chongyun was called to a haunted house because of a report from an anonymous source. Once there, he finds a hoard of supernatural creatures protected by Childe, who is known as the Guardian of the house, and the twins, Aether and Lumine, the Traveller and Guide to help supernaturals. Once inside, a particular supernatural catches his eye, and the exorcist finds himself dragged into a crazy world full of possibilities.