Rain has long, pink hair. She wears a flower hair clip in her hair as well. She has red eyes just like her sister.
In the PriPara world, she wears a flower dress with a purple jacket and high heel shoes.
Rain is a perfectionist. She believes she's the best at everything and hates to lose. She absolutely hates getting dirty and would squish a bug at first sight. She tends to criticize her younger sister Hikari about what she likes to do, saying it's not "lady like"
She takes the longest showers out of everyone in the family. Her birthday is May 15.
Hikari Hoshiiro - Rain's younger sister.
Hanabi Shiratama - Rain's first daughter.
Momo Shiratama - Rain's second daughter.
Shiratama: Shiratama can be split into two parts. Shiro (白) meaning white, referencing Hoshido, and tama (玉) meaning jade, pearl, or any other jewel.
Rein: Rein is the romanized spelling for "rain".
- She is in no way related to Mikan, despite having the same last name.