is an action and comedy Japanese TV series starring Masaya Oki, originally broadcast on Nippon TV in 1979. The show won great popularity in its time. It is noted for the ad-libbing and jokes by the cast and staff.
Masato Asà  was a detective at Nizuma police station but was forced to resign. He sets up an office in a building in Aoyama as a private detective. Asà  solves various incidents taking advantage of his former profession. He is always trying to get a lot of money even in nearly illegal ways through work from clients. But eventually, it always ends up not working. Each of Asà  private detective office's members has their own profession, but helps Aso's investigation as a part-time job. They have unique nicknames.