Kodansha (式会社講談社, 1909 - Present), also known as Dai Nippon Odankai Kodansha, is a Japanese publishing house founded in 1909 by Seiji Noma. Seiji founded Kodansha as a spin-off from the Dai-Nippon Yūbenkai (Greater Japan Oratorical Society) and produced the literary magazine Yūben as its first publication. The name Kodansha, a derivative of the defunct magazine Kōdan Club, in 1911, which it merged with the Dai-Nippon Yūbenkai. Today, Kodansha is known for its Manga publications and is Japan's largest publishing concern.