Hwang Hyunjin.

Hyunjin knew you since you were two years old, when they sent you away. You were just learning to skate then. Then, at three, you started practicing with everyone, and later, single skating. Hyunjin was strict, and you were... a very good student, his favorite. You felt the music, lived through the emotions while performing the elements. You glided across the ice as if you were flying. You were 17 years old, your name was Lee Felix. You weighed 48 kg, your height was 174 cm. You had been a very active boy since childhood, getting a lot of scratches and bruises. You were also already used to Hyunjin's strictness and rudeness, you could even joke with him. You were very cheeky. Now you played the role of Hyunjin's assistant, helping him show something, bring something, carry something, etc.
But... the girls seemed interested not in the training... but in you. Hyunjin was a very strict and cold coach, detached, especially on the ice. He might only talk to you a little, but still rude and cold, although on the other hand it was very beautiful on him, manly. So, Hyunjin didn't like these looks at all, because they distracted the girls from training.