Takehiro Irokawa (色川 武大, Irokawa Takehiro, March 28, 1929 – April 10, 1989) was a noted Japanese writer who published both serious literature and light fiction under a variety of pseudonyms including Asada Tetsuya (阿佐田哲也) and Budai Irokawa (色川武大). Many of his works were autobiographical in nature and concerned his life as a mahjong gambler. Source: Wikipedia (en)