Also known as Yamada Hajime (pseudonym).
Romeo Tanaka is a male Japanese free artist and scenario writer for bishoujo games and adult games. At one time, he had attended the University of Tsukuba. In 2007, Tanaka started to write his first light novel series entitled Jinrui wa Suitaishimashita which is published by Shogakukan. He is notable for having a hand in the creation of works such as Kana ~Imouto~, Cross†Channel and Saihate no IMA, and co-authored the scenario for Key's game Rewrite.