Tsumugi Shiraishi

Tsumugi Shiraishi is one of the new idols introduced in THE iDOLM@STER MILLION LIVE!: THEATER DAYS, where she made her game debut alongside Kaori Sakuramori. She is voiced by Saki Minami.

Personality
Tsumugi is a refined yet sharp-tongued girl who speaks very politely and she is interested in traditional Japanese things, but she does not hesitate to speak her mind. Despite her stoic demeanor, she is easily shaken or flustered who leaps to negative conclusions quite easily, which can be a problem, such as when she thought she, Mizuki Makabe and Shiho Kitazawa were cast as androids in the Melty Fantasia event due to the Producer seeing them as stiff and unfeeling (which ended up being untrue, but it frustrated Shiho at the time).

However, her misconceptions can usually be cleared up.

Background
Tsumugi was scouted by the Producer when he visited the kimono shop her parents run to return some clothes rented for a performance. While not initially outwardly interested, she later showed up at an audition and revealed that she once wanted to be an idol when she was younger.

Etymology

 * The name Tsumugi means "Pongee" (紬).
 * Pongee is a soft and typically unbleached type of Chinese plain-woven fabric, originally made from threads of raw silk and now also other fibers such as cotton, which are usually mercerized.
 * Tsumugi's surname Shiraishi means "white" (白) (shira) and "stone" (石) (ishi).

Trivia

 * As Tsumugi is coming from Kanazawa in Ishikawa prefecture when startled, she speaks in Kanazawa dialect.
 * A running joke among Japanese fans is that Tsumugi's catchphrase is "Nan nan" (なんなん). She is also called "Tsumutsumu" by fans.