Osamu Dazai (太宰 治, Dazai Osamu, June 19, 1909 – June 13, 1948) was a Japanese author. A number of his most popular works, such as The Setting Sun (Shayō) and No Longer Human (Ningen Shikkaku), are considered modern-day classics. With a semi-autobiographical style and transparency into his personal life, Dazai's stories have intrigued the minds of many readers.