Mr. Kang was a teacher of the six main characters and other students, but he was also known as a teacher who can't make a student a star. He was being trusted by the previous school director
- Shi Kyung Jin
She has a crush on Mr. Kang and this was revealed when her father, the new school director, saw her and Mr. Kang accidentaly kissed each other. Also on how she acts. Mr. Kang possibly also liked her because when Miss. Shin's father told him about it and he said COINCIDENCE.
- Yang Jin Man
He was Mr. Kang's schoolmate and friend but when they meet-up again. Jin Man was so upset remembering their past, that was like a nightmare for him. But later on, teaching the students together they build-up their friendship back