Shadow Hearts (シャドウハーツ, Shadōhātsu) is a role-playing video game developed by Sacnoth and published by Aruze Corp in Japan and in the United States and Europe by Midway in 2001. It is the first official game in the Shadow Hearts series and is the sequel to Koudelka. Shadow Hearts follows the adventures of Yuri Hyuga, a Harmonixer guided by a mysterious voice in his head.