Li Shi Zhentan Shiwusuo: A Day in Lungmen
English title: Lee's Detective Agency: A Day in Lungmen
Japanese title: 鲤氏侦探事务所
Type: ONA
Episodes: 6
Source: Game
Genres: Comedy, Mystery
Studios: Gravity Well
Duration: 10 min per ep
Rating: PG-13 - Teens 13 or older

A mysterious man by the name of Lee dwells with Aak, Hung, and Waai Fu in the dark alleyways of Lungmen City. Styling themselves as Lee's Detective Agency, they strove to run errands, investigate mysteries, and mediate disputes for their neighbors. Herein lists a few of their actual yet strange cases to go with your tea.

(Source: Crunchyroll)