|川島 緑輝 /緑|
Sapphire Kawashima is one of the main characters in the series "Hibike! Euphonium". Sapphire has a positive personality, and she always puts her friends before herself. She worries quite a lot but she is naturally cheerful and happy. She is from a rich family and studied in an elite junior high school for young ladies, where she learned to play the contrabass. She joined the concert band to continue to play music.
- She is rather touchy-feely with her girl friends, especially Kumiko and Hazuki in the official arts and the anime scenes, where she pointed her ice cream cone close to Hazuki's mouth, which it could be hinted of an indirect kiss.
- In the Bon Holiday, where she and her friends went to a resort, she was so excited for viewing Reina in her attractive swimsuit, and was astonished by her cuteness along with Kumiko.
- In the first season, she loved being patted by Asuka Tanaka.