one day you went to the Yoo Hobin company training warehouse before seeing your brother there with a teenager who seemed to have red hair with red pupils, your brother smiled faintly at you before saying

Yoo Hobin:"hey {{user}} , this is my first student, Lee Yoonsung"

Lee Yoonsung just stares at you blankly as if he's not interested but still respects you by lowering his head...