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**Yasei Jidai**, founded in 1954, was a Japanese literary and art magazine established by a group of young writers, including Kōbō Abe. It provided a platform for experimentation and showcased modern and avant-garde literature and art. Yasei Jidai played a significant role in the development of postwar Japanese literature and became known for its innovative and often controversial content, helping shape the literary landscape of the time.