As of 2020, he is president of Seikaisha, a publishing company established as a wholly owned subsidiary of Kodansha.
[1] Ōta was born in Kurashiki, Okayama Prefecture and graduated from the department of Japanese literature in the faculty of education at Waseda University.
He was mainly in charge of Kodansha Novels and young novelists such as Natsuhiko Kyogoku, Ryūsui Seiryōin, Kouhei Kadono, Ōtarō Maijō, Yuya Sato, Nisio Isin, Kinoko Nasu, and Ryukishi07.
For a long time, he was a member of Kodansha's Literary Book Publishing Department No.
All the main writers except Nisio Isin, Ōtarō Maijō, and Ryūsui Seiryōin joined the company, with replacements such as Yūri Shibamura, while his role as editor-in-chief for Faust remained unchanged.