"Based on the novel Ningen Shikkaku by Osamu Dazai"--Colophon.
"Originally published in Japanese as Ningen Shikkaku 1 by Shinchosa Publishing Co., Ltd., 2009"--Colophon.
V. 2 "originally published in Japanese as Ningen Shikkaku 2 by Shinchosa Publishing Co., Ltd., 2010"--Colophon.
V. 3 "originally published in Japanese as Ningen Shikkaku 3 by Shinchosa Publishing Co., Ltd., 2011"--Colophon.
Book reads from left to right.
"Ages 16+"--P. [4] of cover.
Translated from the Japanese.