Series · Kodansha
The Decagon House Murders Vol. 1
Graphic Novel
Sep 3, 2025
The manga based off the best-selling The Decagon House Murders novel by Yukito Ayatsuji! The members of a particular university's Mystery Club travel to a ten-sided house on a remote island...which just happens to have been the scene of a gristly, and unsolved, mass murder. Armed with details of the murder and keys to the property, they set out to dig deeper...but can they trust the ""facts"" of the case? And moreover...can they trust each other?
$10.99
The Decagon House Murders Vol. 2
Graphic Novel
Sep 3, 2025
The manga based off the best-selling The Decagon House Murders novel by Yukito Ayatsuji! The members of a particular university's Mystery Club travel to a ten-sided house on a remote island...which just happens to have been the scene of a gristly, and unsolved, mass murder. Armed with details of the murder and keys to the property, they set out to dig deeper...but can they trust the ""facts"" of the case? And moreover...can they trust each other? After arriving on the island, the Mystery Club discover mysterious tablets with things like ""Detective"" and ""Murderer"" written on them. They initially see it as a tasteless prank, but later that night, the tablet reading ""First Victim"" ends up on somebody's door, and the group is forced into solving a real mystery... Meanwhile, on the mainland, Kawaminami and Shimada are getting closer to the secret of the island after receiving letters from Seiji Nakamura, who's supposed to be dead...!!
$10.99
The Decagon House Murders Vol. 3
Graphic Novel
Sep 3, 2025
After the Mystery Club arrives on Tsunojima Island, they discover mysterious tablets with things like ""Detective"" and ""Murderer"" written on them. They initially see it as a tasteless prank, but when the roles written on the tablets start to come true, and the victims begin to pile up, the group realizes their lives will depend on finding the killer... Meanwhile, on the mainland, Kawaminami and Shimada are chasing after the truth behind the ""mysterious quadruple homicide""...
$10.99
The Decagon House Murders Vol. 4
Graphic Novel
Sep 3, 2025
The seven members of a college mystery club head to Tsunojima Island, the site of a mysterious murder-homicide and ten-sided house built by the murdered architect Seiji Nakamura. Before long, the students start dying strange deaths, and the survivors find themselves locked in a battle of wits with the murderer... Meanwhile, back on the mainland, former club member Minamikawa visits the grave of Chiori Nakamura, another former club member who died in a boating accident. While there, she finds something that turns the case on its head...
$10.99
The Decagon House Murders Vol. 5
Graphic Novel
Sep 3, 2025
A group of mystery-loving college students visit Tsunojima Island, the site of an infamous quadruple homicide, and home to architect Seiji Nakamura's unusual Decagon House. Shortly after their arrival, members of the group start turning up murdered, until the fifth day...when the entire Decagon House goes up in flames. Meanwhile, on the mainland, Kawaminami and Shimada discover the truth behind the Tsunojima Island murders from a year ago. But when they visit the grave of Chiori Nakamura, a former mystery club member and Seiji's daughter, they find something that turns the case upside down, and Kawaminami receives word that all the club members on the island have died... All will be revealed in this final volume!
$10.99
