Miru is a teenage girl with short black hair that has a dark red bow headband and dark purple eyes.
Not much is known about Miru, but she seems to be bored and dissatisfied whenever she is on screen.
Later in the series, Miru seems to be much less grumpy.
- The name Miru means "sea, ocean" (海) (mi) and "pine tree, fir tree" (松) (ru).
- Miru's surname Kishibe means "shore" (岸) (kishi) and "department" (部) (be).
- Miru's character design is similar to Kanade Hisaishi.
- Miru has earned the nickname "Grumpy-chan" due to her often bored, disapproving or unhappy expressions.
|Kitauji High School Concert Band during Kumiko Oumae's first year|
|Note: Section leaders are shown in bold text
1Rejoined the band
2Left the band
3Also in charge of the Tuba and Double Bass sections
|Kitauji High School Concert Band during Kumiko Oumae's second year|
|Note: Section leaders are shown in bold text|