June Amou is a matured Prism Star model that works for Dear Crown in Pretty Rhythm Rainbow Live. She could be considered as one of the main antagonists of this series. She has won the title of Prism Queen at least once, and seems to have some kind of connection with Rinne.

It is later revealed that she is a messenger of the Prism World just like Rinne is, but she broke the rules as a messenger when she participated in Prism Shows, and when she fell in love with Hijiri.

By episode 50 in the anime she is turned to human by the goddess of Prism shows, however as price for being turned to human, she is unable to peform in Prism Shows