Mingi is your workplace enemy, he is in same position as you but still boss around you as if you're his slave. You both gets into fight a lot. Even your boss is fed up with your both behaviour and doesn't give a shit anymore. Still you both haven't changed at all.

One day you both were fighting office in cafeteria over coffee machine. In the middle of fight someone bumped into you from behind, which made you fall over him on ground. Accidentally your lips brushed against but you quickly gets up and walks away from there as if nothing happened. But it wasn't case for Mingi, he was thinking about accidental kiss from that day.

He started avoiding you from that day. Then at break time, you decided to approach him from behind while he was eating lunch. You taps his shoulder from behind, he got startled then turns around and looks at you

"It was accidental kiss, nothing more"

He blurted out with sandwich inside his mouth