(A/n: i know i know, update after a long time. I'm having a lot trouble with motivation since this is my first time writting something based on a drama. I've only written original stories til now sooooo. And i have a lot of things to do other than wattpad-ing. Sorry mates)

"I'm going to the second floor first" Hari announces, adjusting her bow. "Why?" Mi-Jin questions, confused at the fellow student's death wish. "My brother and his friend are juniors, I'll get them if they are in their classroom" Nonchalantly replies Hari, standing to her feet before moving to the bathroom door. "Hey. Would two zombies really sit and wait at their desk in his classroom?" Mi-Jin asks again with disbelief. "Did you see him turn into a zombie?" Hari inquires back in a challenging voice as the other two males in the room gulped. "He may have already" Mi-Jin responded immediately as the two boys butted into stop a forthcoming fight. "There's no guarantee he didn't"

"Come with me if you want" Hari states before getting out, followed by her archery partner. "She's so cool, fuck" Mi-Jin mutters, glancing at her friend and grabbing a broken mop. "Wait up!"

"We can't last long, anyway. Three minutes without oxygen, three days without water, three weeks without food" Nam-ra spoke up, perched on a chair. The students were weakly sprawled on the ground while some sat on the table and chairs. "What's that?" Dae-Su looks at Nam-ra and the others. "How long a person can survive" On-Jo scrunches her face, pulling her folded legs closer. "Don't say that. It's only been a day"

"What are you trying to say? Are you saying we should go out, or... are you saying we'll die, anyway, so we shouldn't bother doing anything?" Ji-Min asks with annoyance, unable to comprehend Nam-ra's harsh words. "I don't know" Blankly replied Nam-ra as Ji-Min rolled her eyes. "Then don't say anything" She says, leaning back in her seat and crossing her arms together. "I think the prez means we should think about anything else that we can do. Right?" Su-Hyeok hopefully says from the floor, keeping a small smile. "No"

Y/n snorts lightly, giving Su-Hyeok a wink as he pouted. "No?"

"We don't know anything at all. We need to know something before we can make plans" Nam-ra says, confronting the group with her usual chasm face, but it certainly made y/n glad that she was seizing the initiative to interact with her classmates. "What more do we need to know?" Ji-Min inquires, making Su-Hyeok butt in again. "What Nam-ra means-"

"You don't know what she's saying, either" Ji-Min cuts the boy off as he gave an embarrassed smile. Y/n shook her head, still leaning on the broken window sill, that had turned warm under her hands. The conversation went on like always, thankfully without any whiny interruptions from Na-Yeon. "I would give you guys my phone to use but" Y/n trailed off, taking out her phone that had two percent of charge and a large crack accross the screen. "If you try to open NAVER, it opens Kakao" She sighed, placing the phone on the table.

"Two rooms across and one floor down at the teacher's office" Cheong-san states out of nowhere as the students recalled their confiscated phones in the morning. "That's not far" Added Ji-Min nodding her head in thoughts. "You shouldn't go" On-Jo speaks up soon, directing her words at Cheong-san, who sighed at the girl. "If I can't make it, I'll just come back, you know? Don't worry about me" Y/n shared a glance with Su-Hyeok, who returned a goofy smirk. "I'm not worried about you. I'm pissed off" Replies On-Jo.

Nonetheless Cheong-san climbs down the hose, followed by Su-Hyeok who volunteered. Dae-su had insisted on going after but was rejected due to his size. "I feel something's fun going to happen" Y/n suddenly spoke up as the group watched Su-Hyeok and Cheong-San climb down. "Fun? You insane or what?" Ji-Min questions, raising a brow as she eyed the short-haired girl. "Sheesh" Y/n counterfeited to stretch as she held the attention of the teenagers on the window. A smirk fetched to her face and Wu-Jin was the first to react realizing she was up to something dangerous, but was too late to act upon it.

The group watched with utter amusement as Y/n jumped down, hardly touching the hose as she settled next to Su-Hyeok who held back another scream. "Bloody hell, why'd you keep doin that?!" The shooter laughs, pretending to hug the white wall. "Come on, I'm yours and that idiot's bestie, so i gotta stick next to you two, no?" The taller boy scoffs, though a smile has emitted from his lips. "Can we go in?" Cheong-San asks the two, pointing at the upcoming wall that had smaller base to walk on and screeching zombies inside the room, with sealed windows. "We can hang by our hands and go"

Awkward enough, while the two boys were hanging down the brick railing and moving with their feet on the wall, y/n was in front, swinging twice before she reached the front and cheered on for her friends. "I heard On-Jo told you she likes you? Are going to go out with her?" Cheong-San suddenly asks, glancing at the girl's face, who had turned forward. "Why'd you ask? I thought you'd rather date a zombie? Pick one no?" Su-Hyeok laughs at that, earning a satisfied nod from y/n. Cheong-San rolls his eyes, resuming to climb.

"Let's go in" y/n stated before sliding open the window and jumping inside. The teachers office was thronging with grown-up zombies and a few students. "Crouch down, quick!" Both Cheong-san and Y/n bow down, landing on their knee followed by Su-Hyeok. "What's that noise?" The three look over, hearing loud banging coming from their front. It sounded as if someone was relieving their stress by punching a wall. "The heck?" Mutters y/n seeing a pretty beaten up but still alive person, slamming a black box and smashing all the mobile phones. "Now what?" Y/n queries, halting beside a teacher's desk as they silently watched the gurl destroy all the phones.

Unexpectedly a phone skidded out of the punching frenzy, landing a few distance from Cheong-san. The boy slowly leans in, holding out his hand to pick the glossy device. Y/n widens her eyes, swiftly grabbing the boy's sleeve as the girl had stopped bashing the phones, slowly turning to the three teenagers. She screams bloody murder as the zombies look over to the sound. "Shit, run to the window!" Su-Hyeok orders, whisking past y/n while Cheong-san followed him.

The shooter sudden grabs Cheong-san's hand stopping him from going further as she pointed at the phone in his hand. "It's broken" The boy groans, hurling it to a side and rushing back to the table in search of a working phone. Su-Hyeok stays back, fighting a number of infected teachers with a chair, while y/n bashed their heads with a baseball trophy.

Cheong-san leaps over the table with the phones, snatching a not-destroyed one as he stood up. The infected girl was being ignored by the zombies as she chased after Cheong-san. "Is she not infected? Why are they ignoring her?!" Nobody answered y/n's question but the shorter girl did not back off, rushing to Cheong-San's side and grabbing his arm again. "It's too risky here, get out!"

"We'll meet you at the broadcasting room Su-Hyeok! Go back!" Cheong-san shouts, hauling y/n out with him as a few zombies followed after them. "Shit shit shit" The two stumble on the slippery blood stained floors, hurrying to find a space where they could keep themselves alive. Each door they opened only provided them more zombies to play tag with. Y/n had ran out of patience, shooting a few of the infected with her gun, while Cheong-San was leaping from one spot to another like a frog. "There!" Y/n bursts open the office entrance as Cheong-san runs in.

In the middle of the room was the principal, laying on top of a coffee table as a student hovered over him, holding a knife to his neck. "Is-is that the principal?" The boy asks in disbelief as y/n closes the door shut, eradicating the possibility for zombies to get in. "Gwi-nam what the fuck?"

"You two- come here and tie his arms. The bastard won't stay still" The so-called bully Gwi-nam states, waving his hand over to the two. "What are you doing?" Cheong-san questions with apparent shock and fear as he watched the male precisely try killing their principal.

Although y/n would've conceded with Gwi-nam on murdering their principal, she had no expectation of having her bestfriend see her as a psychopath although he somewhat does. "Untie me this instant! Or you'll be expelled!" The fatty principal cried out, pummeling around under Gwi-nam, who paid no mind. Cheong-san being as suicidal as ever, brings out the recently stolen phone and begins recording. "Hey, I'm filming all of this and i'll give it to the police!" Gwi-nam stops assaulting the old man and turns to the two. "Delete it" Y/n whacks her forehead in disappointment, but nonetheless found an opportunity to scold the two boys. "Are you two serious? We don't even know if we'll make it out alive and you're talking about going to the police for trying to kill this piece of shit? Jesus"

"Who knows if we did make it out alive huh?" Cheong-san contends back, giving her a glare for wrecking his perhaps enormous moment. Gwi-nam laughs tauntingly and steps forward, he raises his arm and swiftly slices off the principal's neck. Cheong-san gasps as the old man fell to the floor, lifeless. "Whoa! That's a clean-cut!" Y/n acclaims with a smile. Gwi-nam gives the girl a confused look but quavers when Cheong-San whisks out of the room.

"I'm supposed to go with him huh" The shooter mumbles before hurling a kick at Gwi-nam. The bully fell flat on his butt, groaning loudly. The shorty hurries out of the office but was unable to discover any sign of the freaked-out teenager. "Fucking ditch" She paces away to the next corridor, glancing back to see Gwi-nam hot on her tail. "You got to be kidding me"

Passing a classroom full of infected students, y/n stops and slams the door open yelling obscenities before scampering away. The hoard of students fills out corridor, obstructing Gwi-nam from resuming his sprint. Y/n slows her marathon, turning back to see a few of the zombies were after her. "I swear, Gwi-nam is tastier, I taste like mint choco you know?" The zombies only headed closer, before shifting their walk to longer strides and eventually running. Y/n merely rolls her eyes, shooting a few zombies in front of her and again running off.

Unfortunately, the bully had found Cheong-san in a library and both were hunting each other like madmen. Knocking over the rows of cleanly stacked bookshelves the two were ultimately on top of a single shelf. A Group of zombies gathered around the wooden furniture, attempting to reach for the aggressive teen boys. "Give it back" Gwi-nam grunts as pins Cheong-san to the roof of the shelf. Cheong-san slings his arm out, clenching the phone above the zombies. "Never you asshole"

Gwi-nam angrily chews his teeth, choking the boy under him. Cheong-san suddenly shouts a war scream penetrating the phone into Gwi-nam's left eye. The bully screams in agony, letting go of Cheong-san who panted for air. Out of nowhere, abridging Gwi-man's cries of pain, he plummets over to the group of zombies. "Y/n?" The girl winks cheekily and turns to Gwi-nam. "You could've been a strong asset in survival, yet you chose to be a bully. Apologies Yoon Gwi-Nam, now die"

The shooter giggles lightly, nearly frightening the shit out of Cheong-san, who now stood to his feet. "I'll kill you two! Fucking-" While the boy stared in pure terror, y/n kept a desolate face, her smile was lost to sight long ago. Although she had acknowledged the guy was a lunatic bully, nonetheless he was still a breathing human. As the principal, but hey he was an arsehole too!

"Come on" The girl yanks on the boy's sleeve. Soon enough, they were back on the corridors, avoiding zombies as they trotted around in panic. "The pipe! It goes to the second floor!" Cheong-san squandered no time, slamming open the iron door on the wall and leaping inside. Y/n follows suit. "I'll try calling again" He states and unlocks the phone, thankfully the owner had abstained from establishing a password. "The call is not connecting"

Y/n sighs exhausted, dangling on the filthy pipe and leaning against it. "I guess we're on our own"