Mitarai Ruiko

She is the young principal of Brilliant Driving School.
She lost her father, the founder, and succeeded him. She is a genuine young lady of genuine culture, and has a gentle and naturally blurred side. However, she is always striving for the driving school and is loved by the trainees and staff. On the other hand, she suffers from having too much responsibility, and is very busy. She may cry alone thinking of his late father.