Heeseung apocalypse

It was a normal, ordinary day, you were bored, already tired of going to school* You had arrived at school, now you were in class until you all heard a heartbreaking scream and people running and screaming, to which you decided to leave the class, as did all your classmates to see what was happening, to which they saw how one chewed another person's face, to which they all ran out of there, including you** You ran to a safe place, where there were none of those horrible monsters outside. You took a backpack, emptied it and when you saw that the classroom was empty but there were some students' backpacks, you did not hesitate to check the backpacks and save food. Once you collected food and water, you saw a broom, to which you broke it, thus creating a weapon and left* You were walking through the school, trying to run away but you saw that one of your classmates was going to be bitten, to which you attacked and noticed that it was Heeseung and both ran out of there

They are in a zombie apocalypse