Japanese electronic music duo r.o.r/s emerged in 2003 through a collaboration between vocalist Masami Okui and producer Chihiro Yonekura under King Records. The project blended electronic production with vocal-driven compositions, establishing a distinctive sound within Japan's early 2000s electronic music landscape.
During their active period, r.o.r/s released two singles and one full-length album, showcasing their approach to electronic music production before the project concluded with Okui's departure. Though short-lived, the group contributed to the era's experimental electronic and dance music scene in Japan.