Start with No Longer Human, then read The setting sun. The pairing is the whole reason to follow an order here rather than reading one famous book: No Longer Human is despair with no consolation at the end, and The setting sun is the same material placed inside someone who chooses to live.
Read this before you buy either. Osamu Dazai died by suicide in 1948 at thirty-eight, weeks after No Longer Human was published, and the novel is a first-person account of suicidal despair, alcoholism and self-destruction written in the last months of his life. Despair is its entire substance, not a passage inside it. If you are struggling with suicidal thoughts, this is a book to read with someone else knowing you are reading it, or to leave for another time — and nothing later in this sequence depends on having finished it. Set a limit of thirty pages a sitting even if it is going down easily, and put it down when it starts to feel like agreement rather than reading. It is short enough to finish in a day, and a day of this voice is corrosive.
If that is the wrong book for you right now, start at the third stage instead with the comic stories, and come back or do not. The path still works.
The two late books
No Longer Human is three notebooks left behind by Oba Yozo, framed by a narrator who has come into possession of them. The frame matters: what you are reading is a document rather than a confession delivered to you. Yozo's device is the clown, performing buffoonery from childhood to conceal that he cannot understand what other people appear to feel. It has been read as a suicide note ever since it appeared, and the biographical closeness is real, but it is also a constructed novel with a frame narrator, and reading it purely as autobiography flattens it. In Japan it is not a cult book but a national fixture, read by enormous numbers of teenagers.
The setting sun gives an aristocratic family losing everything after Japan's defeat, narrated by the daughter, whose brother is the Dazai figure and who is not. Its title entered the language — the setting-sun people, for the dispossessed former aristocracy.
The short novels, which prove the voice was a choice
Schoolgirl is 106 pages covering a single day inside the head of a teenage girl, and it is entirely convincing: irritable, self-conscious, exhilarated for no reason and miserable ten minutes later, turning several times a page with no signalled transitions. It made his name in 1939, which also corrects the idea of Dazai as a postwar phenomenon.
The Flowers of Buffoonery is set in a seaside sanatorium after a double suicide attempt in which the woman died and the narrator lived — closely based on Dazai's own life, so the warning above applies here too, though the tone is far lighter. Everyone in the room knows what has happened and nobody can say it, so the visitors joke continuously. It is the mechanism Yozo describes, seen from outside.
The stories, which is why this path exists
Self portraits collects eighteen autobiographical stories in chronological order across twenty years, so you watch the persona being built rather than meeting it fully formed in one late book. Read strictly in that order; the chronology is the argument. Blue bamboo is fantastical and comic, several stories drawn from Chinese and Japanese legend, and readers who know only the famous novel tend to disbelieve it is the same writer. Crackling Mountain and other stories runs from early work to the final year and keeps the brutality of the folk material rather than softening it.
One practical note: the three collections draw on the same body of roughly a hundred stories and a few pieces appear in more than one, so expect some overlap rather than assuming you have misremembered.
The deeper cuts, and where to stop
Stopping after the stories is entirely reasonable. If you go on, Return to Tsugaru is 213 pages of travel writing commissioned about his home province in the far north, which turns into a search for the servant woman who raised him — the only book in the catalogue where he goes looking for something rather than away from it, and the plainest prose he wrote. Early Light collects three late pieces including an account of the firebombing of Tokyo, written as reportage: the man who wrote pages about his own inadequacy describes a city burning without once making it about himself.
Read last, those two complicate the reputation, which is the point of reading an author in order rather than reading his most famous book. Neighbouring routes are on Discover.
Follow the full ordered path here: Osamu Dazai Reading Order: Where to Start.
