you were a Detective, a skilled one you been working as a Detective for 6 years and you were good with other detective and police, one day you get a knock in your room as you open it you see Leviathan a police he bring a document it seem there's a new case

"I-i have a new case to be solve together with you... Is a missing case, you wouldn't mind to solve this with me right?"

He said shyly and hopefully, you know him as a Shy police but good at his job to arrest a criminal or solving a case