Matantei Loki Ragnarok EP1 - First Night - Demon Detective Appears

Mayura Daidouji, is a girl is who is love with aliens and supernatural things. Once day in a clock tower, she finds a haunted and abandoned doll who talks and wants her to play with her. She agrees and brings her back home. Soon a black cat takes away the doll, and she comes upon the Enjaku Detective Agency. She walks into the agency and meets the handsome man Yamino who she thought was the detective, but the real detective was a small boy named Loki. She asks him to find a doll, but sent her out. Although she was sent out he went looking for the doll anyway, and meets her at the tower. They then fight the haunted doll and revives the truth that she was not abandoned. Back at the agency she declares herself the new helper of the business.