"Ron Kamonohashi's Forbidden Reasoning" is a story woven by the duo of Ron Kamonohashi, a detective said to be a genius, and Isshiki Totsumaru, a goofy but pure-hearted man with a passionate spirit. The series has also been published in France and is popular overseas, with an anime adaptation scheduled to air in October of this year, already generating a lot of buzz. The series features a variety of cases, many of which are considered difficult. In this article, we'd like to announce a ranking of the most difficult cases that appear in the series! As some people will be reading the original work in the future, we'll try to avoid spoilers as much as possible.

Story Summary

Ron Kamonohashi was a promising young detective at a detective training school, but he was banned from detective work due to a fatal flaw: his deductive reasoning often led criminals to commit suicide. He then met Todomaru Isshiki of the First Investigative Division, and teamed up with him to once again embark on the path of deductive reasoning. They face a variety of challenging cases.

No. 3: The Locked Room Piggy Bank Theft

Toto Isshiki (aka Toto) is a detective in the First Investigative Division, but he spends his days frustrated by the lack of access to difficult cases. One day, Toto receives a request to search for the contents of a stolen piggy bank, and teams up with Ron to investigate. Meanwhile, Toto's superior, Amemiya, and his team investigate a case in which a body was found by the river. The client claims that the piggy bank's contents have been lost because it has become lighter, but Ron realizes that this is connected to the aforementioned case. When the two cases—a money theft and a murder—are connected, you'll definitely find yourself saying, "That's it!" While each episode is a simple, self-contained story, it can be quite difficult to predict how the plot will unfold.

No. 2: Live Broadcast Murder

People shooting a magazine photo on a rooftop notice a severed human head inside a balloon held by a clown. What's more, when the clown lets go of the balloon, the head disappears... This is a very mysterious incident. Since a head wouldn't float in the air like a balloon, one might think it was hung from above, but the location was on a rooftop, and there was no place to hang it from above. Even if you try to float a person's head with balloons, it takes hundreds of balloons to make it float. As the investigation hits a snag, Ron appears and begins investigating. The case has an air of impossible crime, building anticipation as you wonder what tricks are being used. Through this case, the protagonist meets a brain surgeon named Usaki Mofu, and later, a secret about Ron is revealed.

No. 1: The Tragic Sailing Serial Murders

It is discovered that an insider within the M family, a world-renowned assassin family, is plotting to assassinate Ron. While attending the detective training school, BLUE, Ron was expelled after committing an incident known as the "Bloody Training Incident." It turns out the M family was involved in the incident, and an informant was leaking internal information about BLUE. Ron attempts to expose the informant in the "Tragic Voyage Murders." The investigation leads to the conclusion that the culprit is undoubtedly one of four people: Finn, Hirsch, Elmer, and Shachi. This is an important episode that reveals the truth about Ron's past.

Reader's Discussion

When the Tragic Voyage Murders was serialized, there was much online speculation about who the culprit was. Shachi was a leading candidate. This was due to his connections to BLUE and his, for better or worse, obedience to Finn. Since he's connected to BLUE, it's only natural that everyone knows who Ron is. He is also loyal to a woman named Finn, and it's speculated that he might even commit a crime for her if she had some kind of weakness.

Summary of Difficult Case Rankings

I think every case was so compelling that it left me wanting to know what would happen next. If you're interested, I highly recommend reading the original work. There are many other cases, and the story is captivating. It's even more satisfying to read while trying to guess who the culprit is and what tricks they're using! That's all for today. Thank you for reading.

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