Koji Igarashi (Japanese: 五十嵐 孝司, Hepburn: Igarashi Kōji, born 17 March 1968) is a Japanese video game producer, programmer, writer, and creative director. Often credited as IGA, he began his career by joining Konami in 1990 as a programmer. Over the next ten years, he moved into a senior role within the company, working on Castlevania: Symphony of the Night as a programmer, writer, and assistant director. He later served as the lead producer on the Castlevania series, starting with Castlevania Chronicles in 1999 and ending with Castlevania: Harmony of Despair in 2011. During his time with Konami, he was also involved in other titles, such as Nano Breaker and Tokimeki Memorial. In 2014, Igarashi left Konami to later become the co-founder of Artplay who in June 2019 released Bloodstained: Ri