Ryo Akizuki (秋月涼 Akizuki Ryou) is an idol and the cousin of the 765 Production idol, Ritsuko Akizuki. He first appeared as a protagonist in the Nintendo DS game THE iDOLM@STER Dearly Stars, as an idol for 876 Production. In THE iDOLM@STER SideM, he makes a return appearance as a 315 Production idol as a member of the unit F-LAGS, along with Kazuki Tsukumo and Daigo Kabuto. Before Ryo joined 315 Production, he was part of the unit Dearly Stars along with Ai Hidaka and Eri Mizutani.