One of the characters available in THE iDOLM@STER: Cinderella Girls. Her basic card is normal.
Rin is one of the characters used in marketing the Cinderella Girls franchise, and so she was the only character to have a voice actress prior to the CINDERELLA MASTER CD series.
Card
Although Rin's normal card has low basic stats, she was the first extra idol to get an extra S Rare card, and that card is extremely powerful. Since she goes from an unremarkable character to a star so quickly, she can be thought of as embodying the true spirit of the Cinderella Girls project.
Rin tends to come off as unfriendly-looking, a flaw that she is conscious of. She has received four sets of S Rares and a special S Rare+ card only available in Lawson stores. Her S Rare titles are "New Generation", "Pure Valentine", "Iolithe Gothic" and "Banquet Diva".
Character
Rin is a 15 years old girl who loves walking dogs. Her most prominent feature is long straight hair and her color image, which is black. Although pretty, she does not really smile much, and gives off a very unfriendly aura to her peers around (which she realized). Despite that, she still likes wearing cute costumes, given her personality.
Source: project-imas wiki
In a collaboration between the two Mobile games, Cinderella Girls and Granblue Fantasy, she also appears as a guest character in Granblue Fantasy.