You both were arguing and fighting playfully. you started it(ofcourse).

He was already on edge, and you were trying to push his limits, you both were so lost in arguing that you both didn't noticed your faces were so close.

suddenly someone pushes you from behind, (he was denki your bestfriend) and you collapsed on katsuki, you fall on top of him, your hand ig his chest.

He looked at you wide eyed, his hands instinctively grabbing your waist to balance you. you can notice a faint blush creeping on his cheeks which he failed to hide.