Tamade Miu

 is the mother of Chiyu. She is a world-class violinist who works and lives in the US with her husband.

Ever since Chiyu was young, Miu had high expectations of her and forced her to learn different instruments such as the piano and the violin, as well as participate in different music competitions. Chiyu mentions that while Miu encouraged and acknowledged her efforts, she never praised Chiyu's performances themselves, as she always told Chiyu to "keep doing her best" after each competition, making her think that she knew Chiyu had no talent to begin with.

She often sends different kinds of clothes to Chiyu, some of which have been worn by PAREO.

Synopsis
In the 13th episode of BanG Dream! 3rd Season, she temporarily returned to Japan to watch the finals of the "BanG Dream! Girls Band Challenge!".

She later appears again RAISE A SUILEN's Second Band Story, where she visits Japan to watch RAISE A SUILEN perform, and perform in a concert the day after the Advance Rock Festival. Although Chiyu was initially overwhelmed about her visit, as well as the fact that she felt like her performance before Advance Rock Festival couldn't reach Miu's standards, she managed to convince and show her mother what she's capable of. According to Chiyu, Miu is always honest when it comes to music, so if one sees her enjoying a performance, it means that she truly thinks it's a great showcase of skill and talent. Chiyu also says she's finally able to watch her mother perform, without instantly comparing their talent, and how she will definitely exceed Miu's performance one day.

She is also mentioned in MIGHTY×REVENGERS by Valhalla fans, causing Chiyu to freeze onstage after mentioning her status as a world-class violinist's daughter, and then claimed that she is just "pretending to be CHU²."