森鷗外
Kojima was born in the plebeian Shitaya district of Tokyo to a family of clothing merchants. While attending Keio University he studied Edo period Japanese literature and the works of European authors. He was especially attracted to the works of Nagai Kafū and Mori Ōgai. His literary career began as a student, when he contributed short stories to the journal of Keio University's literature department, "Mita Bungaku".