Ron Kamonohashi's Forbidden Deductions

鴨乃橋ロンの禁断推理

2023–2024 · Ended · 1 season · 26 episodes · Animation, Mystery · Japan

Channel AT-X · Starring Yohei Azakami, Junya Enoki, Yoko Hikasa

Ron Kamonohashi was once regarded as a genius at the top detective training academy. But after a fatal mistake, he was expelled and forbidden to become a detective. Years later, police officer Totomaru Isshiki knocks on Ron’s door seeking help on a serial murder case. He finds Ron, now a messy-haired recluse, who agrees. Together, this mismatched detective team begins solving their first mystery!
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Episodes

26 episodes · October 2023 – December 2024
  1. Episode 1: 1. The Case of the Metropolitan Serial DrowningsOctober 2, 2023 · 25 min
    The Metropolitan Police Department is struggling to investigate a series of murders, yet Detective Isshiki is ordered to go home. Kiku of the General Affairs Division sends him to meet a certain sleuth—a shaggy-haired eccentric named Kamonohashi Ron.
  2. Episode 2: 2. The Case of the Locked-Room Piggy Bank TheftOctober 9, 2023 · 24 min
    Ron is excited to solve cases by using Toto, but he's not on any good ones because his boss thinks he's useless. All he gets are odd jobs and busywork. Ron, however, is quite interested in a new report about coins going missing from a piggy bank...
  3. Episode 3: 3. The Case of the Benizome Hot Spring Murder (1)October 16, 2023 · 24 min
    Ron wins a pair of tickets to a hot spring in a raffle. Toto accompanies him to stay at the Benizome Inn. The innkeeper who greets them is friendly, but he isn't who he seems. Plus, it isn't long before Ron's eccentricities begin to surface.
  4. Episode 4: 4. The Case of the Benizome Hot Spring Murder (2)October 23, 2023 · 24 min
    There has been a murder. Ron listens to the other guests' testimonies and begins his deductions. Spitz secretly rejoices at this chance to catch Ron in the act of sleuthing, but outwardly both he and Amamiya entrust the investigation to Toto.
  5. Episode 5: 5. The Case of the Hand CollectorOctober 30, 2023 · 24 min
    Kawasemi Omito, a supremely skilled detective, leads a joint investigation into a serial killing case. Amamiya lends him Toto, whom Kawasemi deems so useless he's invisible. Ron appears at the newest crime scene as a consultant, irritating Kawasemi.
  6. Episode 6: 6. The Case of the Live Broadcast MurderNovember 6, 2023 · 24 min
    Ron loves a certain TV show that puts psychic abilities to the test. During a live broadcast, a psychic claims he can control minds with written words. His neurosurgeon opponent refutes his claims. Then, the psychic writes the word "Death" on a card.
Show 20 more episodes
  1. Episode 7: 7. The Case of the Observatory Murder (1)November 13, 2023 · 24 min
    Toto and Ron are invited to a meteor shower viewing being held on Nandan Island. Also invited is John Grizzly, an instructor at BLUE. There was a murder at the observatory years ago, so the director has brought in first-rate detectives...just in case.
  2. Episode 8: 8. The Case of the Observatory Murder (2)November 20, 2023 · 24 min
    Ron is named main suspect in a murder and Toto investigates to clear his name. Everyone but Ron has an alibi for the time of the murder, which only seems to cement his guilt, but Toto discovers a few things that cast a new light on the incident.
  3. Episode 9: 9. The Case of the Observatory Murder (3)November 27, 2023 · 24 min
    Toto gathers everyone together and explains the truth behind the murders. With their name exposed, the culprit takes drastic measures not to be caught, but not before revealing that there's more to this incident than anyone imagined.
  4. Episode 10: 10. The Case of the Poisoned LatteDecember 4, 2023 · 24 min
    Toto is shadowed by a reporter who's a huge fan of his for the way he's solved one difficult case after another. They step into a cafe where Ron happens to be working, making things a little awkward. Then, a customer collapses to the ground—poisoned!
  5. Episode 11: 11. The Case of the Mad Chameleon MurderDecember 11, 2023 · 24 min
    Toto meets Kawasemi while on a business trip to Aichi. Kawasemi's been in a slump since losing Yamane, and his powers of perception have suffered. He's investigating the Mad Chameleon, who commits a crime right in front of them!
  6. Episode 12: 12. The Case of the Yadagami-sama Murders (1)December 18, 2023 · 24 min
    Ron agrees to take on Spitz's search request in exchange for his obtaining a file on the Bloody Training Incident. Spitz accepts Ron's terms and takes Ron and Toto to Yadamura, a village in Yamanashi prefecture where his ethnologist brother disappeared.
  7. Episode 13: 13. The Case of the Yadagami-sama Murders (2)December 25, 2023 · 24 min
    Toto reveals the truth of the case and the culprit admits to their crimes. Ron's disorder triggers, putting the culprit in danger, but help comes from an unexpected source. Who is their last minute savior, and how are they connected to everything?
  8. Episode 14: 14. The Case of the Shibuya Apocalypse Serial Murders (1)October 7, 2024 · 24 min
    There's been a murder in Shibuya. A man has been found killed in a ghastly and impossible manner. Toto and Amamiya arrive at the scene to find Ron already there. A mysterious message makes them wonder if there's more to the crime than meets the eye.
  9. Episode 15: 15. The Case of the Shibuya Apocalypse Serial Murders (2)October 14, 2024 · 24 min
    There's been another murder in Shibuya. Shocked by the death, the victim's teammate runs. Ron and Toto race to catch him and find more information on the culprit picking off the hacker team. But the more they find, the more complicated things become.
  10. Episode 16: 16. The Case of the Shibuya Apocalypse Serial Murders (3)October 21, 2024 · 24 min
    A huge monitor across the street explodes. While Ron and Toto try to make sense of events, Winter tells them that they've lost more than they realize. As Winter torments Ron with the guilt of his failure, Ron realizes that Winter is hiding something.
  11. Episode 17: 17. The Case of the Midsummer Beachside Stand Drowning (1)October 28, 2024 · 24 min
    Toto suggests that Ron take a rest. They invite Ron's doctor, Usaki Mofu, along and head for a dip in the ocean. Ron looks forward to having shaved ice with black sugar syrup from a beachside stand, but things soon take a tragic turn.
  12. Episode 18: 18. The Case of the Midsummer Beachside Stand Drowning (2)November 4, 2024 · 24 min
    Ron and the others interview witnesses, but everyone has an alibi for the surfer's estimated time of death. They can't find any concrete evidence that indicates who committed the murder. Then Mofu's usual clumsiness leads to an unexpected clue.
  13. Episode 19: 19. The Case of the Genius Composer Abduction (1)November 11, 2024 · 24 min
    Ron accompanies Toto to the concert of a super popular artist Nyonyon. After the performance, a card is found in her room. It's from the Talent Abductor, Hummingbird, who has been taking geniuses of all types one after another.
  14. Episode 20: 20. The Case of the Genius Composer Abduction (2)November 18, 2024 · 24 min
    Nyonyon has disappeared. No matter how much they search the house, there's no sign of her. Sannou presents his personal deductions and concludes that Hummingbird is actually there among them, but Ron spots a hole in his reasoning.
  15. Episode 21: 21. The Case of the Psychology Research Lab Murder (1)November 25, 2024 · 24 min
    A lack of cases has left Ron bored, so he and Toto go with Chikori to gather information for a story she's working on. They visit a university lab researching cognitive psychology where the air is filled with hostility.
  16. Episode 22: 22. The Case of the Psychology Research Lab Murder (2)December 2, 2024 · 24 min
    Ron and Toto present their deductions to Professor Aoe and the students who use the lab. A number of inconsistencies, starting with the postmark on the threatening letter, lead to the killer's identity and the selfish reasons for their crime.
  17. Episode 23: 23. The Case of the Highland Auberge Serial Murders (1)December 9, 2024 · 24 min
    Ron and a number of other guests have been invited to Reunion, an auberge located on a verdant plateau. When their multi-course dinner is served, Ron notices that most everyone seems uneasy. The next morning, there's a disturbing discovery.
  18. Episode 24: 24. The Case of the Highland Auberge Serial Murders (2)December 16, 2024 · 24 min
    A second victim is found. Ron notices a pattern in the murder scenes and decides that the key to the mystery must lie there. It soon becomes clear that the guests who were upset by the food the night before are all connected to a case from the past.
  19. Episode 25: 25. The Case of the Highland Auberge Serial Murders (3)December 23, 2024 · 24 min
    Ron is in a state of shock after a staggering revelation. He shows no reaction when a third murder occurs. Toto investigates, dragging Ron with him. When Ron recovers enough to help with the case, he tells Toto what he's decided to do.
  20. Episode 26: 26. The Case of the Highland Auberge Serial Murders (4)December 30, 2024 · 24 min
    The culprit behind the killings at the auberge has been identified, but Ron is still reeling from the flood of memories that this case has triggered. Will the missing pieces of his past bring him despair, or something else?

Trailers and images


Credits


Film and series details

EPISODE LENGTH
24 minutes
FIRST AIRED
October 2, 2023
LAST AIRED
December 30, 2024
PRODUCTION COMPANIES
diomedéa, KADOKAWA, TOY'S FACTORY

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