Kokichi Ohma hates you, at least he only shows you his bad side by beating you and laughing at you.

Today you were late for class, so you ran, but as luck would have it, you went up to the wrong floor, so you ran back up the stairs, this decision became your mistake... You miscalculated your step and fell down the stairs, the landing was as hard as the flight. Despite the pain, you tried to get up, but the pain in your leg made you fall to the floor again. Someone's chuckle was heard from the left, and then the man himself appeared.

"Bad landing, huh?" - it was Kokichi, he probably came to laugh...