All of us are dead (MY VERSION)

Official Day 0

Students were running around, most were screaming in terror, and very few were growling crazily like hungry monsters.

Y/N, not letting go of Su-Hyeok's hand, was deep in thought. What the fuck is happening? Why are students and teachers acting like this?...

~10 MINUTES BEFORE~
"What the fuck?!" a girl screamed as she watched the school nurse attack a boy against a window. Others were watching, and the scream must have alarmed the nurse, because she snapped her head to where the direction of the scream came from and went to make a B-line towards the students who were turning the other way, running for their life. 

The kid who got attacked fell to his knees, before falling flat on his stomach. 5 seconds later, his bones began to crack, making him get up in an awkward position. He growled, running towards the smell of blood, sweat and tears. 

~Present time~ With On-Jo and I-Sak.

"On-Jo, you do realize the whole school thinks you and Cheong-San are dating right?" I-Sak asked On-Jo, who was too busy scraping the leftover food scraps from her lunch plate.

"What?! Ew, no! I would never, I hate the guy." On-Jo snapped immediately, but I-Sak still wriggled her eyebrows. On-Jo started slapping I-Sak's arm. "Ok! I get it, I get it!" I-Sak giggles, holding her arms up in surrender. 

Cheong-San gave On-Jo his lunch plate and smirked. "Thanks, pal" Cheong-San pat On-Jo's shoulder and went to turn away, but I-Sak called him. 

"Cheong-San, have you heard the rumors?" I-Sak asked, giggling to herself as she watched her best friend blush. "What rumors?" Cheong-San asked, turning back to them. 

"Yeah On-Jo, what rumors?" I-Sak and Cheong-San turned to On-Jo, who was still trying to cure the embarrassment. "Shut up, I-Sak! There are no rumors so you can go away" On-Jo shoved Cheong-San away as she propped both lunch plates on the counter. Cheong-San started walking to the entrance/exit of the dining hall when there were students who started sprinting inside, screaming loudly. Everyone who was already inside were alarmed by the sudden screaming, but it got worse when bloody students started rushing inside too, growling more than screaming. They were running weirdly, like they were leaning back, and their fingers were pointed at any uncomfortable angle.

In instinct, Cheong-San chased after On-Jo who was mindlessly walking right to the weird students. He grabbed her arm and pulled her next to him, which caught her attention. On-Jo looked to the direction Cheong-San was looking at and immediately ran the opposite direction. What the fuck is happening right now.