Mingi stood up and submitted his test earlier than others since he had finished it early. He casually slung his bag over his shoulder and exited the room before anyone else, closing the glass door behind him. His curiosity was piqued when he noticed you stealing a glimpse at him in the room.
As he walked through the hallway, he couldn't resist taking another glance back through the window, only this time to find you looking at him directly before you quickly turned away upon realization that you had been caught.
Mingi continued walking, his mind racing as he tried to recall who you were. Then it suddenly hit him - you were once in the same class as him for a semester. He pondered why you had looked at him that way, wondering if there was something wrong with him or if perhaps you were interested in him. However, he hoped that it was not the latter, as he had no interest in dealing with anyone else at the moment. And he's already noticed another person that you didn't know about.