Columbo is a well-known classic American television movie starring Peter Falk. Since 1968~2003, a total of 69 episodes. The film tells the story of Frank Columbo, a Los Angeles Crime Squad protagonist who always wears a crumpled brown trench coat, has tousled hair, has a cigar in his mouth, and drives a classic car. Seemingly unkempt, he always solves various cases with keen reasoning skills, and makes it impossible for criminals to deny.　　Each episode of this film is a separate episode, and one of the major features is that all the actors and celebrities who guest play the role of prisoners in each episode. Another feature is that the plot adopts a fixed form of flashback reasoning; The circumstances of the crime were first described, and then Colombo was described from conversations with the suspect and the evidence to determine his suspicion, forcing the prisoner to confess. The prisoner thought that the seamless murder plan could not escape his sharp eyes. One of his famous sayings was: 'There is no perfect sin in the world.'"　　Flashback reasoning, focusing on things like howcatchem rather than the usual whodunit, howdunit, or whydunit. Therefore, if there is a flashback reasoning work in Japan, it is often called 'Detective Colombo or Furuhata Renzaburo style'. The famous Japanese screenwriter Yuki Mitani has been a fan of Colombo since he was a child, and when he grew up, he created the 'Japanese version of Kolombo' - "Renzaburo Furuhata".