Kamonohashi Ron no Kindan Suiri

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Japanese: 鴨乃橋ロンの禁断推理

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Information

Type: Manga

Volumes: 19

Chapters: 171

Status: Finished

Published: Oct 11, 2020 to Jul 6, 2025

Genres: Comedy, Mystery

Theme: Detective

Demographic: Shounen

Serialization: Shounen Jump+

Authors: Amano, Akira (Story & Art)

Statistics

Score: 7.53¹ (scored by 3,729 users)

¹ indicates a weighted score.

Ranked: #2925²

² based on the top manga page. Please note that 'R18+' titles are excluded.

Popularity: #1310

Members: 17,152

Favorites: 337

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7.53

Ranked #2925Popularity #1310Members 17,152

MangaShounen Jump+Amano, Akira (Story & Art)

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Volumes: /19

Chapters: /171

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Synopsis

Despite lacking the skills suited for his role on the Metropolitan Police Department investigative team, Totomaru Isshiki wants to solve murders and help people. Following the advice of one of his seniors, he ventures out to enlist the aid of the reclusive Ron Kamonohashi. Five years ago, Ron was the most promising detective from the illustrious Detective Training Academy Blue; yet for reasons unknown to the public, he sank into obscurity.

Totomaru expects a well-dressed, composed man; but what he gets is a messy-haired and uninhibited eccentric. After years in solitude, Ron barely resembles his former self and he refuses to even hear out the detective. However, as quickly as Ron rebuffs, he flips on a dime and dives headfirst into the current serial murder case.

The true reason Ron withdrew from the detective world was not from lack of desire, but rather from something out of his control—and Totomaru might just be the key for his return to his former calling. Together, the wide-eyed officer and deranged detective tackle each mystery that comes their way.

[Written by MAL Rewrite]

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Background

Kamonohashi Ron no Kindan Suiri was simulpub digitally in English as Ron Kamonohashi: Deranged Detective through MANGA Plus. It has also been published in Spanish by Panini Comics since April 28, 2022; in German by Crunchyroll since November 3, 2022; and in Polish by Studio JG since November 3, 2023.

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Characters

Kamonohashi, Ron

Main

Isshiki, Totomaru

Main

Feier, Spitz

Supporting

Moriarty, Winter

Supporting

Kawasemi, Omito

Supporting

Moriarty, Mylo

Supporting

Amamiya

Supporting

Usaki, Mofu

Supporting

Moriarty, Alice

Supporting

Monki, Chicory

Supporting

Reviews

Jan 9, 2021

abitofsalmon

Recommended

Preliminary (6/171 eps)

INITIAL THOUGHTS: This is a gag series - not a detective series!

As a fan of the author's Hitman Reborn series, I was very excited to see that she has started a new series as I wasn't a fan of elDLIVE, yet alone a detective series (my favourite genre).

Needless to say, after reading the first few chapters, I can now confirm that this is a GAG series in a detective setting. It is written like a typical detective series in which a police investigator and a smart detective team-up to solve crimes with clues and stuff. The mysteries aren't that intricate or interesting, and the solutions ...

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Dec 6, 2021

BakaBoysClub

Recommended

Preliminary (43/171 eps)

This manga is objectively no more than a 4/10 BUT it goes it the "it's so bad it's good" territory so I personally would definitely say it's a 7/10.

I have made a whole video review if you feel like it, you can check that out from my profile.

Story - 4
*I know this is long but I make good point so consider reading*
By far the "best" worse part. It has a classic mystery of the week vibe however I really liked that especially considering the fact that all of the mysteries are between 2 to 4 chapters. It was great to have all of the ... evidence presented and then for our two main boys to connect all of it to the crime. This is where the issues start... many of the actions and the "rules" of the world don't make sense. For example, the shtick of the manga is that Ron makes the murders kill themselves after he has revealed their identity. This is basically just magic and a few other characters are aware of it. The problem is the killer is always outed in front of everybody (scooby-doo style) but NOBODY restrains the killer after it's knowing that they are guilty. Sometimes they run, other times they try to hurt someone, and always Ron enchants them into trying to commit suicide. Why aren't they cuffed immediately? Because the plot needs them not to be. This is one of many many examples of how the story is filled with logical fallacies and plot holes. Which for a mystery is bad.

Art - 6
I was able to appreciate the buildings to which we dedicate all of the spreads but apart from that and a few dead bodies nothing is really too eyecatching. Does it need to be? No, it's fully functional without the standard overexaggerated moments in manga (which I love). But due to that some of the moments that are supposed to hit don't feel all that heavy which would have been a plus.

Characters - 7
The two main boys are great I genuinely like them and the fact that they make a great duo is what kinda carries some boring parts of the manga. The recurring side characters are always fun I enjoyed them every time they would pop up. The characters that are introduced specifically for a mystery and then forgotten can be hit or miss but when they miss it's so bad it's actually pretty fun.

Enjoyment - 7
Just like how it's with the bad characters the plot holes are a damn fun time. In every mystery (apart from one) there is a key flaw that if pointed out makes the whole narrative crumble to the ground. And once I accepted that I actually had a great time looking forward to those bad moments.

Overall - 7
Yup, a classic case of laughing at a bad manga. But unlike most in which the characters or the art is the main reason here the only thing is that the logical inconsistencies are basically everywhere. Everything else is great.

If you want to look at some cool characters and laugh at some bad plot you can check this out.

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Jan 18, 2023

ArcadeRice

Mixed Feelings

Well-written

Preliminary (21/171 eps)

(Currently, on Chapter 75. My overall thoughts have not changed, only reworded some parts, added more context, and made it more readable.)

I have read Katekyo Hitman Reborn! the anime at least 4 times in my childhood, the manga I've finished 5 times, having re-read it almost yearly. I've read and watched elDLIVE, and re-read it once since I took a break in the middle. Started watching Psycho-Pass (yes, I know, she only did the art), and I can confidently say, that this manga...
...It's meh.

Story: 5/10
If you're looking for an actual detective story, this isn't it, nor if you're hoping for a different type of ...

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'Kamonohashi Ron no Kindan Suiri' 2nd Season Announced

The 13th and final episode of Kamonohashi Ron no Kindan Suiri (Ron Kamonohashi's Forbidden Deductions) announced a second season for the television anime follow...read more

Dec 25, 2023 10:11 AM by Vindstot | Discuss (5 comments)

Manga 'Kamonohashi Ron no Kindan Suiri' Gets Anime

The Jump Studio NEO stage for Akira Amano's Kamonohashi Ron no Kindan Suiri (Ron Kamonohashi: Deranged Detective) manga announced an anime adaptation on Sunday....read more

Dec 17, 2022 6:00 PM by Vindstot | Discuss (18 comments)

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Poll: Kamonohashi Ron no Kindan Suiri Chapter 170 Discussion Mei-o_Scarlett - Jul 5, 2025	0 replies	by Mei-o_Scarlett »» Jul 5, 2025 7:34 PM
Poll: Kamonohashi Ron no Kindan Suiri Chapter 169 Discussion Nieznajomy43 - Jun 21, 2025	1 replies	by Tamer2002 »» Jun 28, 2025 11:04 PM
Ending with chapter 170 MegamiRem - Jun 21, 2025	2 replies	by Mei-o_Scarlett »» Jun 21, 2025 7:48 PM
Poll: Kamonohashi Ron no Kindan Suiri Chapter 168 Discussion Nieznajomy43 - Jun 14, 2025	3 replies	by Tamer2002 »» Jun 15, 2025 1:41 AM
Poll: Kamonohashi Ron no Kindan Suiri Chapter 167 Discussion Nieznajomy43 - Jun 7, 2025	1 replies	by Tamer2002 »» Jun 14, 2025 11:49 PM

Kamonohashi Ron no Kindan Suiri
Ron Kamonohashi: Deranged Detective
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