2021

*Ron Kamonohashi: Deranged Detective*-related events for **2021**.

## January

* **3:** Chapter 9, "The Case of the Island Observatory Murder Pt. 1" is released.
* **10:** Chapter 10, "The Case of the Island Observatory Murder Pt. 2" is released.
* **17:** Chapter 11, "The Case of the Island Observatory Murder Pt. 3" is released.
* **24:** Chapter 12, "The Case of the Island Observatory Murder Pt. 4" is released.
* **30:** Chapter 13, "The Case of the Island Observatory Murder Pt. 5" is released.

## February

* **4:** Volume 1 is released.
* **6:** Chapter 14, "The Case of the Poisoned Latté Pt. 1" is released.
* **8:** A one-shot is published in the *Weekly Shōnen Jump* Issue 10.
* **13:** Chapter 15, "The Case of the Poisoned Latté Pt. 2" is released.
* **21:** The one-shot is re-released online on *Shōnen Jump+*. Unlike other chapters, it is not simultaneously released by MangaPlus.

## March

* **6:** Chapter 16, "The Case of the Mad Chameleon Murder Pt. 1" is released.
* **20:** Chapter 17, "The Case of the Mad Chameleon Murder Pt. 2" is released.

## April

* **3:** Chapter 18, "The Case of the Yadagami-sama Murders Pt. 1" is released.
* **17:** Chapter 19, "The Case of the Yadagami-sama Murders Pt. 2" is released.
* **24:** Chapter 20, "The Case of the Yadagami-sama Murders Pt. 3" is released.
* **30:** Volume 2 is released.

## May

* **1:** Chapter 21, "The Case of the Yadagami-sama Murders Pt. 4" is released.
* **15:** Chapter 22, "The Case of the Shibuya Revelation Serial Murders Pt. 1" is released.
* **22:** Chapter 23, "The Case of the Shibuya Revelation Serial Murders Pt. 2" is released.
* **29:** Chapter 24, "The Case of the Shibuya Revelation Serial Murders Pt. 3" is released.

## June

* **12:** Chapter 25, "The Case of the Shibuya Revelation Serial Murders Pt. 4" is released.
* **19:** Chapter 26, "The Case of the Shibuya Revelation Serial Murders Pt. 5" is released.
* **26:** Chapter 27, "The Case of the Shibuya Revelation Serial Murders Pt. 6" is released.

## July

* **10:** Chapter 28, "The Case of the Midsummer Beach Hut Drowning Pt. 1" is released.
* **17:** Chapter 29, "The Case of the Midsummer Beach Hut Drowning Pt. 2" is released.
* **24:** Chapter 30, "The Case of the Midsummer Beach Hut Drowning Pt. 3" is released.

## August

* **1:** Instead of a chapter, a special illustration is released.
* **4:** Volume 3 is released. It contains the one-shot which is now entitled "The Case of the Sandbox Murder at Dawn."
	+ The first merchandise line is released by Anique Shop (Japan-only).
* **6:** The manga begins serialization in Thailand under the title "สืบลับฉบับคาโมโนะฮาชิ รอน."
* **7:** Chapter 31, "The Case of the Genius Composer Kidnapping Pt. 1" is released.
* **14:** Chapter 32, "The Case of the Genius Composer Kidnapping Pt. 2" is released.
* **20:** The manga begins serialization in Taiwan under the title "鴨乃橋論的禁忌推理."
* **21:** Chapter 33, "The Case of the Genius Composer Kidnapping Pt. 3" is released.

## September

* **4:** Chapter 34, "The Case of the Genius Composer Kidnapping Pt. 4" is released.
* **11:** Chapter 35, "The Case of the Psychological Research Lab Murder Pt. 1" is released.
* **18:** Chapter 36, "The Case of the Psychological Research Lab Murder Pt. 2" is released.

## October

* **2:** Chapter 37, "The Case of the Psychological Research Lab Murder Pt. 3" is released.
* **10:** Chapter 38, "The Case of the Plateau Auberge Serial Murders Pt. 1" is released. It marks one year of serialization.
* **17:** Chapter 39, "The Case of the Plateau Auberge Serial Murders Pt. 2" is released.
* **31:** Chapter 40, "The Case of the Plateau Auberge Serial Murders Pt. 3" is released.

## November

* **4:** Volume 4 is released.
* **7:** Chapter 41, "The Case of the Plateau Auberge Serial Murders Pt. 4" is released.
* **14:** Chapter 42, "The Case of the Plateau Auberge Serial Murders Pt. 5" is released.
	+ Start of a "Guess the Culprit"-event for the Plateau Auberge Serial Murders Case. Among the people who have guessed correctly, five are randomly chosen to receive a canvas board signed by Akira Amano.
* **27:** End of the "Guess the Culprit"-event for the Plateau Auberge Serial Murders Case.
* **28:** Chapter 43, "The Case of the Plateau Auberge Serial Murders Pt. 6" is released.

## December

* **5:** Chapter 44, "The Case of the Plateau Auberge Serial Murders Pt. 7" is released.
* **12:** Chapter 45, "The Case of the Plateau Auberge Serial Murders Pt. 8" is released.
* **18-19:** A new drawing is released for Jump Festa 2022.
* **21:** Chapter 46, "The Case of the Fortuneteller Prince Murder Pt. 1" is released.

## References

1. ↑ 1.0 1.1 Plateau Auberge Serial Murders Poll: The prize — Akira Amano on Twitter