Aina Rumika

Aina Rumika (愛菜 るみか, Aina Rumika) is Hibiki and Ayaka's homeroom teacher.

Appearance
She is a woman of average height with long blonde hair and yellowish/brown eyes.

Personality
She is one of the few characters which are not freaked out by Machio flexing and tearing his clothes, being more interested in his advice.

Like Yakusha and Satomi, she is angered by quips about her age.

History
By her own account, she was a delinquent in her youth.

Plot
She is the homeroom teacher of Sakura Hibiki. She is first seen, announcing the members of the track team. She and Kure Yakusha go to return Satomi's gym card and join the gym themselves.