The Decagon House Murders (manga)

The Decagon House Murders (Japanese: 十角館の殺人, Hepburn: Jukkakukan no Satsujin) is a Japanese manga series, based on Yukito Ayatsuji's novel of the same name, illustrated by Hiro Kiyohara. It was serialized in Kodansha's seinen manga magazine Monthly Afternoon from August 2019 to April 2022, with its chapters collected in five tankōbon volumes. In North America, the manga is licensed by Kodansha USA.

The Decagon House Murders
First volume cover
十角館の殺人 (Jukkakukan no Satsujin)
Genre	Horror[1] Mystery[2] Thriller[1]
Manga
Written by	Yukito Ayatsuji
Illustrated by	Hiro Kiyohara
Published by	Kodansha
English publisher	NA: Kodansha USA (digital)
Imprint	Afternoon KC
Magazine	Monthly Afternoon
Original run	August 24, 2019 – April 25, 2022
Volumes	5

Plot

It tells the story of a group of seven university students who travel to a deserted island where a strange decagonal mansion stands. It was the scene of a grisly mass murder six months earlier, and events soon turn ominous.

Publication

The Decagon House Murders, based on Yukito Ayatsuji's novel of the same name and illustrated by Hiro Kiyohara, was serialized in Kodansha's seinen manga magazine Monthly Afternoon from August 24, 2019,^[3] to April 25, 2022.^[4][5] Kodansha collected its chapters in five individual tankōbon volumes, released from November 22, 2019,^[6] to May 23, 2022.^[7]

Kodansha USA publishes the series digitally in North America from August 17, 2021,^[8] to November 29, 2022.^[9]

Volumes

No.	Original release date	Original ISBN	English release date	English ISBN
1	November 22, 2019[6]	978-4-06-517511-8	August 17, 2021[10]	978-1-63699-298-3
2	August 21, 2020[11]	978-4-06-520225-8	September 21, 2021[12]	978-1-63699-365-2
3	March 23, 2021[13]	978-4-06-522661-2	October 19, 2021[14]	978-1-63699-417-8
4	October 21, 2021[15]	978-4-06-525035-8	April 5, 2022[16]	978-1-68491-111-0
5	May 23, 2022[7]	978-4-06-527854-3	November 29, 2022[9]	978-1-68491-563-7