Chūya Koyama (小山 宙哉, Koyama Chūya, born 30 September 1978) is a Japanese writer, best known for his Space Brothers series, published regularly since 2007. On 2 November 2016 his artwork was carried into space by the H-IIA rocket carrying the Himawari-9 weather satellite as part of an outreach project organized by the Young Astronauts Club Japan. Source: Wikipedia (en)