Motoko Higashiura

Motoko Higashiura (東浦 心子) is a side character of Sound! Euphonium: The Movie - Our Promise: A Brand New Day film. She is a new first-year at Kitauji High School. She joins the band as a percussionist in Kumiko's second year.

Background
Motoko is in the same class as the oboist Ririka Kenzaki. Occasionally, their homeroom teacher will liven it up as “Grandpa-sensei”. She has played percussion since middle school, so her sense of rhythm is exceptionally good. She got hit in the head with a baseball when she was 8 years old.

Etymology

 * The name Motoko means "heart, mind, soul" (心) (moto) and "child" (子) (ko).
 * Motoko's surname Higashiura means "east" (東) (higashi) and "bay, inlet" (浦) (ura).