No Longer Human

Portraying himself as a failure, the protagonist of Osamu Dazai's No Longer Human narrates a seemingly normal life even while he feels himself incapable of understanding human beings. Oba Yozo's attempts to reconcile himself to the world around him begin in early childhood, continue through high school, where he becomes a "clown" to mask his alienation, and eventually lead to a failed suicide attempt as an adult. Without sentimentality, he records the casual cruelties of life and its fleeting moments of human connection and tenderness. Source: New Directions

Manga version of the novel Ningen Shikkaku by Osamu Dazai.

Set in modern day Tokyo, Dazai's tale details the life of a young man originally from a well-off family from Japan's far north. Yozo Oba is a troubled soul incapable of revealing his true self to others. A weak constitution and the lingering trauma from some abuse administered by a relative forces him to uphold a facade of hollow jocularity since high school. The series is composed of three parts, referred to in the novel as "memorandums," which chronicle the life of Oba from his teens to late twenties. (Source: Kodansha USA) *Adaptation of the original work of Dazai Osamu.*

Manga based on the original classic novel by Dazai Osamu. Illustrated by Yasunori Ninose, it depicts human beings' negative emotion and sexual intercourse as tentacles, which have enthralled Ninose since he was five years old.