Sonohara Yuiko

A music teacher at Honoue Academy.
Yukio is 26 years old and she is also an assistant teacher of Shouta's class.
She is a kind teacher who listens to the troubles of her students and deals with them.
But she often puts too much passion into it and taking things too far.

Her hobby is finding very old literature.
Yukio also likes cars, but when she grabs the wheel, her personality changes entirely.