Kenji Miyazawa/Synopsis

Armed Detective Agency vs. Port Mafia Arc
Kunikida had called Kenji and some other members to come to a warehouse, where Dazai said a man-eating tiger will appear. As they came, Dazai had already defeated the tiger and explained it was Atsushi and the tiger transformation was his ability. Kenji wonders what they will do with Atsushi and Dazai explains he wants him to join their agency.

After some time during the Black Lizard attack on the agency, Kenji is present in the office, but the agency easily took down the attacks. Kenji wonders what they will do with them and Kunikida tells him to just threw them out of the window and Kenji proceeds to throw them out one by one.

The Armed Detective Agency is given a case to investigate a car explosion. After the police leave the office, Kenji states that city polices sure are busy since they leave without having tea. Kunikida then asks Kenji if the police from his home have free time. Kenji then replies that everyone knows each other in his village. The policeman's job was to only fix a pump well, rescuing cats from chimneys, and tasting the first year's watermelon. Kunikida then asks what if someone commits a crime to which Kenji replies that the perpetrator will be tied up and thrown into a cliff. He then also states that he does not really understand the concept of money. Kunikida then offers Atsushi to investigate the case.

Kenji accompanies Atsushi to investigate the case and goes to the Yokohamabashi Shopping District to gather information. Kenji encounters a man he knew and asks him if he knows anything about the car explosion. The man then replies that some folks bought a load of fertilizer and Kenji concludes that it must be nitrogen fertilizer used to make bombs. Kenji and Atsushi then decide to go to the place of the gang in question and asks them if they are responsible for the bomb explosion. Hearing this, Atsushi then tells Kenji that even though they may be the ones who did the explosion, he doubts that they will admit to it. Kenji then replies that if they are sincere with their inquiries, they will respond.

After arriving at the place, Kenji then asks the folks if they are the ones responsible for the bomb explosion, however they reply that they do not know anything about it. Hearing their reply, Kenji then thanks them and proceeds to leave. After leaving the place, Atsushi exclaims that they are obviously the ones that cause the explosion however Kenji says that he never fails to communicate with others. Kenji then initiates to go eat first before going back to the office.

While heading back to the office, they were blocked by the gang members they asked before and tells them that they might have found a proof since they left early. Kenji then thanks them for telling the truth and tells Atsushi that everyone in his case confesses like that. He was then attacked by a gang member by a pipe causing him to fall. However, he gets back up easily and attacks the gang members.

Not long after, Kenji defeats all of the gang single-handedly. He and Atsushi then eat at a restaurant; after getting full, Kenji takes a nap.