Attack on Titan fanfic.
Adult private detective setting:
Erwin: Boss of Wings of Liberty.
Levi: Office employee. He used to be a gangster, but later became a good person, and now he is living with Erwin (the boss's wife?)
Han Ji: Office employee. Good at cross-dressing, gender unknown.
Mick: Office employee. Retired military personnel.
Lots of nonsense/loose logic/relaxing and cruelty-free/CP team members/various guest appearances by all members