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Poster for Ron Kamonohashi's Forbidden Deductions

Ron Kamonohashi's Forbidden Deductions

6.8/10 56 votes
AnimationMysteryCrimeAction & Adventure

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!

Cast:
Yohei Azakami, Junya Enoki, Yoko Hikasa, Taku Yashiro
Language:
Japanese
Country:
Japan
Network:
AT-X, TOKYO MX

Episode guide

Seasons

1 available

Season 1

Episodes

Episode 1 selected
Still from The Case of the Metropolitan Serial Drownings E01

Episode 1

★ 6.0

The Case of the Metropolitan Serial Drownings

2023-10-02 · 25m

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.

Current episode
Still from The Case of the Locked-Room Piggy Bank Theft E02

Episode 2

★ 4.0

The Case of the Locked-Room Piggy Bank Theft

2023-10-09 · 24m

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...

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Still from The Case of the Benizome Hot Spring Murder (1) E03

Episode 3

The Case of the Benizome Hot Spring Murder (1)

2023-10-16 · 24m

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.

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Still from The Case of the Benizome Hot Spring Murder (2) E04

Episode 4

The Case of the Benizome Hot Spring Murder (2)

2023-10-23 · 24m

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.

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Still from The Case of the Hand Collector E05

Episode 5

The Case of the Hand Collector

2023-10-30 · 24m

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.

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Still from The Case of the Live Broadcast Murder E06

Episode 6

The Case of the Live Broadcast Murder

2023-11-06 · 24m

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.

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Still from The Case of the Observatory Murder (1) E07

Episode 7

The Case of the Observatory Murder (1)

2023-11-13 · 24m

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.

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Still from The Case of the Observatory Murder (2) E08

Episode 8

The Case of the Observatory Murder (2)

2023-11-20 · 24m

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.

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Still from The Case of the Observatory Murder (3) E09

Episode 9

The Case of the Observatory Murder (3)

2023-11-27 · 24m

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.

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Still from The Case of the Poisoned Latte E10

Episode 10

The Case of the Poisoned Latte

2023-12-04 · 24m

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!

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Still from The Case of the Mad Chameleon Murder E11

Episode 11

The Case of the Mad Chameleon Murder

2023-12-11 · 24m

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!

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Still from The Case of the Yadagami-sama Murders (1) E12

Episode 12

The Case of the Yadagami-sama Murders (1)

2023-12-18 · 24m

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.

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Still from The Case of the Yadagami-sama Murders (2) E13

Episode 13

The Case of the Yadagami-sama Murders (2)

2023-12-25 · 24m

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?

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Still from The Case of the Shibuya Apocalypse Serial Murders (1) E14

Episode 14

The Case of the Shibuya Apocalypse Serial Murders (1)

2024-10-07 · 24m

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.

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Still from The Case of the Shibuya Apocalypse Serial Murders (2) E15

Episode 15

The Case of the Shibuya Apocalypse Serial Murders (2)

2024-10-14 · 24m

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.

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Still from The Case of the Shibuya Apocalypse Serial Murders (3) E16

Episode 16

The Case of the Shibuya Apocalypse Serial Murders (3)

2024-10-21 · 24m

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.

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Still from The Case of the Midsummer Beachside Stand Drowning (1) E17

Episode 17

The Case of the Midsummer Beachside Stand Drowning (1)

2024-10-28 · 24m

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.

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Still from The Case of the Midsummer Beachside Stand Drowning (2) E18

Episode 18

The Case of the Midsummer Beachside Stand Drowning (2)

2024-11-04 · 24m

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.

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Still from The Case of the Genius Composer Abduction (1) E19

Episode 19

The Case of the Genius Composer Abduction (1)

2024-11-11 · 24m

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.

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Still from The Case of the Genius Composer Abduction (2) E20

Episode 20

The Case of the Genius Composer Abduction (2)

2024-11-18 · 24m

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.

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Still from The Case of the Psychology Research Lab Murder (1) E21

Episode 21

The Case of the Psychology Research Lab Murder (1)

2024-11-25 · 24m

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.

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Still from The Case of the Psychology Research Lab Murder (2) E22

Episode 22

The Case of the Psychology Research Lab Murder (2)

2024-12-02 · 24m

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.

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Still from The Case of the Highland Auberge Serial Murders (1) E23

Episode 23

The Case of the Highland Auberge Serial Murders (1)

2024-12-09 · 24m

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.

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Still from The Case of the Highland Auberge Serial Murders (2) E24

Episode 24

The Case of the Highland Auberge Serial Murders (2)

2024-12-16 · 24m

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.

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Still from The Case of the Highland Auberge Serial Murders (3) E25

Episode 25

The Case of the Highland Auberge Serial Murders (3)

2024-12-23 · 24m

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.

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Still from The Case of the Highland Auberge Serial Murders (4) E26

Episode 26

The Case of the Highland Auberge Serial Murders (4)

2024-12-30 · 24m

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?

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Cast

Yohei Azakami

Yohei Azakami

Ron Kamonohashi (voice)

Junya Enoki

Junya Enoki

Totomaru Ishiki (voice)

Yoko Hikasa

Yoko Hikasa

Amamiya (voice)

Taku Yashiro

Taku Yashiro

Spitz Feier (voice)

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