Miyahara is a petite girl with large glasses who keeps her hair pulled into twin-tails.
Miyahara seems to fit her nickname of "class rep," at least when it comes to Manami, as she is very adamant about getting him to come to school on time and do his work. She even helped Manami talk to a teacher so he wouldn't have to repeat a year. Her serious personality causes her to become frustrated over Manami, who prefers avoiding work.
- She has a pet bird.
- Miyahara's first name is currently unknown. At first, it was been planned to be revealed at the 42nd Summer Inter High, but even after the end of the race it hasn't been revealed yet.