Kashiwagi is a good friend of Tsubaki's who often gives her advice.

Piano prodigy Arima Kousei dominated the competition and all child musicians knew his name. But after his mother, who was also his instructor, passed away, he had a mental breakdown while performing at a recital. This resulted in him no longer being able to hear the sound of his piano playing. Two years later, Kousei hasn’t touched the piano and views the world without any flair or color. He was content at living out his life with his good friends Tsubaki and Watari until, one day, a girl changed everything. Miyazono Kaori is a pretty, free spirited violinist whose playing style reflects her personality. Kaori helps Kousei return to the music world and show that it should be free and mold breaking unlike the structured and rigid style Kousei was used to.

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She is a voice actress. She was formerly affiliated with 81 Produce and Pro-Fit. She is a member of Office Osawa.

Kosei Arima was a piano prodigy until his cruel taskmaster of a mother died suddenly, changing his life forever. Driven by his pain to abandon piano, Kosei now lives in a monotonous, colorless world. Having resigned himself to a bland life, he is surprised when he meets Kaori Miyazono, a violinist with an unorthodox style. Can she bring Kosei back to music, and back to life? 
 
(Source: Kodansha Comics) 
 
Note: Nominated for the 2012 Manga Taisho Awards.

Nao Kashiwagi