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Nagisa is a guitarist who grew up in a rock music-loving family. She came across the club where Aoi performed as a DJ while she was searching for a place to practice, and often visits Hiiro's house as well. Although normally shy, she values friendship above all else and will not hesitate to take a stand when she needs to.
At the same time, she can be noticeably open or even playful with the people she trusts enough. Notable examples include her friendly behavior with Saori during Rondo and Merm4id's joint hot spring trip, or teasing Tsubaki about her tsundere side. In addition, Nagisa tends to be scatterbrained and impulsive at times (for example, forgetting to finish assignments, or ad libbing guitar solos and going a bit too fast in the middle of RONDO's performances).
At the moment, Nagisa is the only character in the franchise who is positioned as an instrumental musician, instead of the other's usual association with electronic music.[source]https://d4dj.fandom.com/wiki/Tsukimiyama_Nagisa[/source]