A popular bar from the Black Lagoon series frequented by criminals, killers and pirates. It's also constantly destroyed by violent shootouts and unstoppable maids.
The Yellow Flag is a bar from the Black Lagoon anime/manga series. It's located in the city of Roanapur and can be identified by its yellow neon sign. It's owned and operated by Bao who tries to keep careful watch over his business with a shotgun behind the counter. Since the bar is repeatedly visited by Lagoon Company and other dangerous criminals, it's the site of many fights and gun battles. This has resulted in the destruction of the Yellow Flag countless times both before and during the series to the point that Bao has armored his counter to stop anything up to .50 caliber rounds.