Miki Onimaru is a poster girl that works at her mother's Chinese ramen restaurant. She appears to be a normal girl, but she can become very violent if provoked. She picks a fight with her mother and accquaintances as a result on an almost daily basis, causing a series of troubling mishaps in their otherwise normal lives. (Source: ANN)

There are 12 companion pieces in the forms of "Fact Files" (which expand upon a given character from a corresponding episode) airing shortly after each episode.

Jigen tells the story of the gang's first meeting. Jigen, still a member of the Mafia, is hired to protect an ancient artifact - one that Lupin and Fujiko are both trying to steal. Meanwhile, Inspector Zenigata, then of the Japanese police force, has come to the U.S. on Fujiko's trail, and Ishikawa Goemon is searching for the lost treasure of his clan. 

(Source: ANN)