Yuhsuke Koyama is a professor at Shibaura Institute of Technology where he teaches economics and social survey. He is also a member of the IGDA (International Game Developers Association) in Japan, and vice chair of the Indie game group. His original major is economics, and his current analysis focuses on the content industry, particularly the video game industry in Japan. He published a book about the history of the Japanese video game industry in 2016, which won the Excellent Literature award in the society of socio-informatics in Japan in 2017. An expanded and revised edition was also published in 2020. His recent work is “Evolution of a Genre: Dragon Quest and the JRPG”, in Racheal Hutchinson and Jérémie Pelletier-Gagnon, Japanese Role-Playing Games: Genre, Representation, and Liminality in the JRPG, Lexington Books, 2022.