Ron Kamonohashi's Forbidden Deductions

Name: Ron Kamonohashi's Forbidden Deductions
Genre: Animation, Mystery, Crime, Action & Adventure
Released: 2023-10-02
Rating: 6.8
Cast: Yohei Azakami, Junya Enoki, Yoko Hikasa, Taku Yashiro

ENDED1 Season26 Episodes★ 6.8

Ron Kamonohashi's Forbidden Deductions is an animated mystery series on AT-X that ran from 2023 to 2024, ending after 1 season and 26 episodes.

Never miss an episode of Ron Kamonohashi's Forbidden Deductions

Get an email the moment a new episode airs — plus alerts if it's renewed or canceled.

NetworkAT-X

First AiredOct 2, 2023

Last AiredDec 30, 2024

GenreAnimation, Mystery, Crime, Action & Adventure

Runtime24 min

Original Title鴨乃橋ロンの禁断推理

LanguageJapanese

CountryJapan

Productiondiomedéa, KADOKAWA, TOY'S FACTORY

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!

WHERE TO WATCH

Crunchyroll

Amazon VideoBUY

Apple TV StoreBUY

Some links may earn us a commission. Data via JustWatch / TMDB

Cast

Yohei Azakami

Ron Kamonohashi (voice)

Junya Enoki

Totomaru Ishiki (voice)

Yoko Hikasa

Amamiya (voice)

Taku Yashiro

Spitz Feier (voice)

Seasons & Episodes1 season · 26 episodes

0% complete

E1The Case of the Metropolitan Serial Drownings

Oct 2, 202325m

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.

E2The Case of the Locked-Room Piggy Bank Theft

Oct 9, 202324m

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...

E3The Case of the Benizome Hot Spring Murder (1)

Oct 16, 202324m

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.

E4The Case of the Benizome Hot Spring Murder (2)

Oct 23, 202324m

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.

E5The Case of the Hand Collector

Oct 30, 202324m

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.

E6The Case of the Live Broadcast Murder

Nov 6, 202324m

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.

E7The Case of the Observatory Murder (1)

Nov 13, 202324m

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.

E8The Case of the Observatory Murder (2)

Nov 20, 202324m

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.

E9The Case of the Observatory Murder (3)

Nov 27, 202324m

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.

E10The Case of the Poisoned Latte

Dec 4, 202324m

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!

E11The Case of the Mad Chameleon Murder

Dec 11, 202324m

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!

E12The Case of the Yadagami-sama Murders (1)

Dec 18, 202324m

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.

E13The Case of the Yadagami-sama Murders (2)

Dec 25, 202324m

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?

E14The Case of the Shibuya Apocalypse Serial Murders (1)

Oct 7, 202424m

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.

E15The Case of the Shibuya Apocalypse Serial Murders (2)

Oct 14, 202424m

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.

E16The Case of the Shibuya Apocalypse Serial Murders (3)

Oct 21, 202424m

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.

E17The Case of the Midsummer Beachside Stand Drowning (1)

Oct 28, 202424m

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.

E18The Case of the Midsummer Beachside Stand Drowning (2)

Nov 4, 202424m

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.

E19The Case of the Genius Composer Abduction (1)

Nov 11, 202424m

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.

E20The Case of the Genius Composer Abduction (2)

Nov 18, 202424m

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.

E21The Case of the Psychology Research Lab Murder (1)

Nov 25, 202424m

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.

E22The Case of the Psychology Research Lab Murder (2)

Dec 2, 202424m

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.

E23The Case of the Highland Auberge Serial Murders (1)

Dec 9, 202424m

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.

E24The Case of the Highland Auberge Serial Murders (2)

Dec 16, 202424m

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.

E25The Case of the Highland Auberge Serial Murders (3)

Dec 23, 202424m

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.

E26The Case of the Highland Auberge Serial Murders (4)

Dec 30, 202424m

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?

About Ron Kamonohashi's Forbidden Deductions

Ron Kamonohashi's Forbidden Deductions is an animation, mystery, crime, action & adventure series on AT-X. The show first aired on Oct 2, 2023 and currently has 1 season and 26 episodes. Ron Kamonohashi's Forbidden Deductions has ended. It has a rating of 6.8/10 based on 55 votes. The cast includes Yohei Azakami, Junya Enoki, Yoko Hikasa, Taku Yashiro.