御所院 冬樺

The daughter of the Azarashi conglomerate, she had been attending a prestigious girls' school, but as the successor, she transferred to Goshoin Academy and lives in the dorms to learn more about the world.

As a rich girl, she is naive and sometimes makes strange mistakes, but her positive personality and natural charm make her loved by everyone in her dorm and class.

She relies on the protagonist, who is always looking out for her.