Although he was the best student in the history of the prestigious Detective Training Academy BLUE, Ron Kamonohashi was kicked out of school and barred from ever working as detective after being involved in a murder case during his training.
Barely keeping a grasp on his love for mysteries and living in seclusion, he is excited to help rookie police detective Totomaru Isshiki who seeks Kamonohashi’s advice on a case at the urging of an older colleague.
Reluctantly and excitingly agreeing to help, Kamonohashi quickly solves Isshiki’s cold case, but Isshiki soon learns why Ron Kamonohashi cannot work as a detective – upon finding the culprit, Ron possesses the uncontrollable power to make the culprit kill themselves.
It introduces some interesting concepts, but for the mysteries in a detective mystery anime to not be the star of the show is maybe not a great thing. If you are looking for more anime recommendations like Ron Kamonohashi’s Forbidden Deductions, head on down below.
Anime Like Ron Kamonohashi’s Forbidden Deductions
For Fans of Buddy Detective Duos
The Millionaire Detective – Balance Unlimited
Daisuke Kanbe is a man of extraordinary wealth and has been assigned to the Modern Crime Prevention HQ as a detective. He gets himself partnered with the stalwart defender of justice, Haru Katou.
They are polar opposites, with Haru frequently upset that Daisuke throws money at everything. However, they need to find a way to solve mysteries together.
While Ron Kamonohashi’s Forbidden Deductions has the key difference of Ron not actually being a police officer, it still creates the same buddy cop dynamic that is on full display in Millionaire Detective.
Both Millionaire Detective and Ron Kamonohashi’s Forbidden Deductions feature mystery-solving duos that have a strong bond and a comical dynamic. One is ridiculous, but an amazing detective. The other is a less good detective, but keeps eccentricity in check and provides the gobsmacked straight man to the comedy.
That said, the eccentricity in Ron Kamonohashi’s Forbidden Deductions comes from Ron’s personality. In Millionaire Detective, it comes from a detective that stoically throws ridiculous amounts of money at obstacles in his way.
Gosick
Kujou Kazuya is a transfer student to the elite Saint Marguerite Academy in the Southern European country of Sauville. However, because of his Japanese descent, he is shunned by the other students.
One day in the library of the school, he ends up following a long blonde hair to a beautiful doll-like girl call Victorique de Blois who can predict the future, including their own currently entwined one.
Together, the pair begin to solve the mysteries that are beginning to plague their surroundings.
Both Gosick and Ron Kamonohashi’s Forbidden Deductions feature an eccentric master detective and the normal person that keeps their quirks in check. In essence, they tell the same kind of detective story, but the differences are in the smaller details.
Unlike the modern-set Ron Kamonohashi’s Forbidden Deductions, Gosick is set in a fictional country in Post-WW2 Europe. Furthermore, it sets its mysteries up to seem supernatural, but always solves them with real culprits. As Gosick has a male and female detective duo, it also has an element of romance as it goes on.
The Case Files of Jeweler Richard
With a deep knowledge of mineralogy, Richard Ranashinha de Vulpian is a handsome British jeweler who opened a shop in Japan. One night, he finds himself harassed by drunks due to his good looks, but is saved by Seigi Nakata, a college student.
Learning Richard was a knowledgeable jeweler, Seigi seeks his help appraising a pink sapphire ring left to him by his grandmother.
After solving that mystery, Seigi becomes a part-time working in Richard’s shop and the pair tackle a number of jewel-themed requests. Piece by piece, Seigi learns the little stories that can be behind every jewel.
It needs to be said that you shouldn’t go into The Case Files of Jeweler Richard expecting the same sort of mystery-solving affair as Ron Kamonohashi’s Forbidden Deductions. It is a show about a jeweler, and as such, it explores jewel-related mysteries and stories – not murders.
The real similarities between Ron Kamonohashi’s Forbidden Deductions and The Case Files of Jeweler Richard lies in the dynamic between the main characters. They work as a duo and one is a more talented, slightly eccentric man while the other is a novice who admires their skills.
While they share a character dynamic, The Case Files of Jeweler Richard is a more serious anime that is focused on its drama and its mysteries.
Beautiful Bones – Sakurako’s Investigation
Initially, high schooler Shoutaro is suspicious of Sakurako Kujo, a cool beauty in her twenties, for the disappearances in his neighborhood. However, he soon learns her true talent is analyzing bones as an osteologist.
Accompanying her on her outings, he finds himself embroiled in a number of mysteries.
What Ron Kamonohashi’s Forbidden Deductions is to murder, Beautiful Bones is to bones.
Both series follow master detectives that have a passion for what they do. Ron has a more broad love of mysteries while Sakurako is more specifically interested in bones.
Both series are mystery-solving anime that highlight a brilliant master detective, and their less brilliant assistant who became enthralled by their skills. Furthermore, each mystery solved is leading up to a looming culprit that may be related to many of the deaths.
For Fans of Unique Mystery Solvers
Undead Murder Farce
In an alternate 19th century, supernatural creatures exist among humans, but have been hunted and persecuted to the point where they have become quite rare.
Tsugaru Shinuchi is an experimental half-oni that has been used by a freak show to destroy the supernatural for the entertainment of the crowd. One night, he is approached by a woman carrying a bird cage containing a severed head. The head introduces herself as Aya Rindo, and asks Tsugaru to help her find and retrieve her immortal body that was stolen from her by a mysterious foreign man.
Leaving Japan for Europe, the trio decide to become detectives who come to be known as, “The Cage User,” investigating supernatural mysteries hoping they might hold clues to the mysterious body thief.
If you enjoyed Ron’s more causal, silly, and occasionally menacing personality, then Undead Murder Farce puts a similar sort of character in the shared main character role.
Alongside main characters with a similar sort of attitude, both Ron Kamonohashi’s Forbidden Deductions and Undead Murder Farce are detective mystery anime. However, the crucial difference is that Undead Murder Farce is a supernatural detective mystery featuring everything from catching master thieves to finding out who murdered some werewolves.
Bungou Stray Dogs
The orphanage that Atsushi Nakajima has been living at has been recently plagued by a tiger that only he can see. Blaming him for the incident, they kick him out.
Now homeless, he wanders the streets until he meets the eccentric Osamu Dazai and saves him from drowning.
As it turns out, Dazai is a supernatural detective and agrees to help him solve the mystery.
Unlike Ron Kamonohashi’s Forbidden Deductions that is a pretty standard detective mystery with just a dash of supernatural, Bungou Stray Dogs is a supernatural action anime with an above average dash of detective mystery.
Unlike Ron Kamonohashi’s Forbidden Deductions that follows police detectives, Bungou Stray Dogs follows an agency of people who essentially solve problems in the city that the cops can’t handle.
Sometimes this is investigating murders, sometimes it is fighting Mafia, sometimes it is sillier things to break up heavier arcs. As such, it covers a wider range of topics, but what makes Bungou Stray Dogs similar to Ron Kamonohashi’s Forbidden Deductions is that it follows an agency that is staffed with eccentrics like Ron Kamonohashi and one main character to play the straight man to their antics like Isshiki.
Detective Conan
Despite his teenage age, Shinichi Kudou is one of the great detectives of the world. However, one day when he witnesses some illegal going-ons, criminals catch him and dose him with a mysterious drug.
Next thing he knows, he is waking up as a little boy again. Now Shinichi must try to solve his own mystery while stuck as seven-year-old.
As Detective Conan is such a long-running detective mystery anime, it is technically applicable as a recommendation to all of its mystery-solving peers in some way or another. However, it is applicable to Ron Kamonohashi’s Forbidden Deductions slightly more than usual to merit a specific mention.
Both Ron Kamonohashi’s Forbidden Deductions and Detective Conan take a decent bit of inspiration from Sherlock Holmes, but what makes them most similar is the worlds they take place in.
Both series are detective mystery anime with just a dose of the supernatural. In Ron Kamonohashi’s Forbidden Deductions, he can make people kill themselves. In Detective Conan, a drug de-aged him to a child. They are small supernatural aspects in otherwise very grounded murder mystery-solving stories.
Furthermore, both series have a healthy love for adding some comedy in to keep the series from being too serious. Although, since Ron Kamonohashi’s Forbidden Deductions follows all adults, it does come off as more mature more often.
The Case Study of Vanitas
Scorned by his vampire peers for being born under a blue moon, it is said that the vampire Vanitas created a powerful grimoire known as the Book of Vanitas that would bring retribution to all crimson moon vampires.
On his way to Paris, Noe is searching for this fabled book. While traveling aboard an airship, he is saved from a vampire attack by an eccentric man that claims to posses the Book of Vanitas and uses it to cure the attacking vampire that was driven rabid by a progressing event afflicting vampires called the Charlatan’s Parade.
Similar to how Ron Kamonohashi’s Forbidden Deductions sets up a Sherlock Holmes and Watson dynamic between Kamonohashi and Isshiki, The Case Study of Vanitas sets that up between Vanitas and Noe – it also has100% more vampires.
Unlike Ron Kamonohashi’s Forbidden Deductions that is about solving mysteries, The Case Study of Vanitas about the main characters getting pulled into a series of different situations as they investigate one overall mystery that is the driving force of the plot.
So instead of going to a place and solving a mystery, The Case Study of Vanitas is about going to a place to look into something and usually getting into a fight.
While the main characters share a similar dynamic in both series, easily the most similar thing between Ron Kamonohashi’s Forbidden Deductions and The Case Study of Vanitas is how the main character carries himself. Both Ron and Vanitas are silly, but also have moments of mystery and seduction that make them so alluring.
In/Spectre
At a young age, Kotoko Iwanaga was abducted by yokai and asked to become their Goddess of Wisdom to act as a mediator between spiritual and human issues. She agreed and lost her right eye and left leg in the agreement.
Meanwhile, Kotoko meets Kuro Sakuragawa, a man who just broke up with his girlfriend after a kappa fled before him.
Kotoko makes her move to not only lock him down as a boyfriend, but to have him help her settle various disputes with spirits.
Ron Kamonohashi’s Forbidden Deductions has some supernatural elements to it – like telling people to kill themselves and having them do it – but it is, for the most part, pretty grounded as a detective mystery. As such, it needs to rely on the narratives around its mysteries rather than some flashy abilities. In/Spectre is a more supernatural-laced mystery-solving anime, but also knows the value of a strong narrative.
Both Ron Kamonohashi’s Forbidden Deductions and In/Spectre feature dialogue-dense mysteries where the content of the anime isn’t so much investigating what is happen so much as it is characters talking everyone else through what happened. That said, Ron Kamonohashi’s Forbidden Deductions is focused solely on murder mysteries while In/Spectre, as it follows a mediator, covers a wider range of events where humans and the supernatural intersect.
For Fans of Sherlock Holmes Inspirations
Moriarty the Patriot
William Moriarty is the second son of the noble Moriarty family. During the day, he is a mathematics professor, but at night he uses his keen mind in order to work as a consultant for individuals with a particular need for his intellect.
He has dedicated himself to revenge against nobility in order to crumble the crushing social hierarchy that oppresses much of England.
As Ron Kamonohashi’s whole thing is that he is the descendant of both Sherlock Holmes and William Moriarty, you mind as well see the Moriarty side of things.
Moriarty the Patriot sets itself apart from all the other anime using Sherlock Holmes literature as an inspiration by following Moriarty as the main character instead of Holmes. As such, you watch him plot out intricate murders of nobility, the thrill coming from watching it all go into action and him get away with it.
Case File nº221 – Kabukicho Sherlock
Faced with an odd case, John Watson heads to the Pipe Cat, a bar that is home to someone that might help. Finding Sherlock Holmes inside, the pair deduce that his case is related to Jack the Ripper.
After witnessing Sherlock’s brilliant mind firsthand, he decides to stick alongside this eccentric character.
Kabukichou Sherlock is most easily summed up as “Sherlock Holmes, but Japanese,” in that the characters are named after their literary peers, but are modern Japanese characters rather than Victorian British ones.
However, it isn’t the Sherlock Holmes inspirations that Kabukichou Sherlock and Ron Kamonohashi’s Forbidden Deductions have most in common, interestingly enough. It is the tone they adapt as a mystery anime.
Both series do portray serious murders and follow the detectives that investigate them. However, they also have a healthy dose of comedy within too. Like Ron, Kabukichou Sherlock gets its comedy from the eccentric nature of the characters.
Do you have more anime recommendations like Ron Kamonohashi’s Forbidden Deductions? Let fans know in the comments section below.
