Natsume Sōseki, pen name Sōseki, born Natsume Kin'nosuke, was a Japanese novelist. He is best known for his novels Kokoro, Botchan, I Am a Cat, Kusamakura and his unfinished work Light and Dark…Natsume Sōseki, pen name Sōseki, born Natsume Kin'nosuke, was a Japanese novelist. He is best known for his novels Kokoro, Botchan, I Am a Cat, Kusamakura and his unfinished work Light and Darkness. He was also a scholar of British literature and writer of haiku and kanshi poetry and fairy tales.