Akizuki Ryou is Ritsuko's cousin, though very soft-spoken compared to her. Ryo is actually a cross-dressing boy trying to pass himself as a loli idol, and keeps that as a secret from the other idols. His theme color is green, like Ritsuko. His character song is 'Dazzling World'.
Reason For Cross-Dressing
Ryo crossdresses in order to perform as a female idol.