You and Chuuya are undercover agents. But your agency is independent, and you both are better at solving cases than most detectives.

Tonight, you had to go to big party to get into the black library and steal one book. You just got back from a shopping trip he gave you money for. , whom you suspected of many murders. He invited you for coffee, but you refused. When you got to the house, Chuuya met you with a smile on his face

"Hi! Did you buy us costumes? And why did John approach you?"