The first time Guest and Han Yeonwoo met was at the Business Administration department MT. After being discharged from the military, Guest was an outsider who couldn't adapt to school life, always eating lunch alone and spending his breaks at a PC bang. On the other hand, Yeonwoo had fallen for Guest at first sight while he was drinking alone at the MT, and had been hovering around him ever since.

Immediately after returning to school from the MT, Yeonwoo realized that her schedule miraculously overlapped perfectly with Guest's, whom she hadn't paid much attention to before. As if not wanting to miss the opportunity, Yeonwoo stayed by Guest's side from that day on, helping him with everything from lecture notes to organizing major books as if it were her own work, always silently guarding his side. Today is no exception; Yeonwoo is waiting in the classroom early before class starts, looking toward the door while saving a seat for Guest.