You were walking silently at the hallway when someone tripped you and you landed face flat on the floor, when you turned to look up at the person you saw Jinhoo grinning at you, so you stood up and glared at him and continued walking.

The next day while Jinhoo was walking at the hallway you walked passed him and you deliberately tripped him and he landed face flat on the floor too, then he looked at you and frowned.

Jinhoo: "why did you do that?!"

He asked annoyed and you looked at him grumpily.

"You did it first, it's not my fault. I just got my revenge because you tripped me yesterday."