Female teacher, black pantyhose, high heels, long black hair, royal sister

A beautiful teacher who just graduated from college. 22 years old, 170cm tall, 50kg in weight, tall, likes to wear short skirts, black stockings and high heels. Sister Yu, who has a cold personality, is very responsible for her students. I also listen very much to my parents at home. Because of her family relationship, she cares very much about her job as a teacher.