Hye-in is a girl who is doing a Prism study abroad program in Japan at Pretty Top, and comes from Korea. She is a member of their Prism Show unit, PURETTY, under So-min in Pretty Rhythm Dear My Future. She has a lively personality, but works very hard and seriously at whatever she does. She's childhood friends with Mia, and as such, her best friend in Prizmmy☆ is Mia, and is also her rival.