The Urge

 "We should go back now before it bleeds even more." Kim Jin said.

Da Eun placed the bottle in her pocket and they walked to the door, Kim Jin peeped through the door and nodded. "Clear." 

 They took in deep breaths and left the room, Da Eun could notice Byeong Ho's change in mood.

 "What is it?" She whispered.

"Keep quiet and keep going." Byeong Ho said and took her hand.

After walking for a while, they were almost close to the staircase when a zombie ran pass Min Ho, hitting Min Ho's broken arm with his body.

 "Ahhhhh!!!" Min Ho screamed in pain.

Immediately Min Ho screamed, the zombies turned to them.

 "Damn it, run!!!" Kim Jin shouted and they hurriedly climbed the stairs, they finally got to the door and started banging on it.

 "Open the door!!!" Min Ho shouted.

"Geu Roo do you hear something?" Ji Hye asked, they were at the front of the rooftop which was far from the door.

 Geu Roo listened for a while. "Damn it, it's them." 

"Open the door!!!" Kim Jin shouted as the zombies were already close to them, Byeong Ho and Da Eun were trying to fight them back.

 Geu Roo ran to the door and opened it, immediately she opened, Kim Jin ran in with Min Ho.

 "Go in I'll hold them back!!" Byeong Ho shouted to Da Eun.

"No we'll go in together." Da Eun insisted.

"I said go!!" Byeong Ho shouted and pushed Da Eun, making her fall to the ground, before she could say more, Ji Hye dragged her in.

 Byeong Ho was still trying hard to fight the zombies, the more they came, the more he wanted them.

Forgetting that they were at the door waiting for him, he allowed the urge to eat up one of the zombies take over him and without him knowing, he grabbed one of them and bit it's neck, almost chewing the whole of it.

 "Byeong Ho!!!!" Da Eun shouted in tears.

"Shut the door, he has been infected, shut it!!" Kim Jin shouted.

"Don't you dare do that, did you see him getting bitten, did you?!!" Da Eun said in tears.

Byeong Ho knew that he needed to explain everything to them, he doesn't even know what's wrong with him. 

 Kim Jin was about to shut the door but Byeong Ho forcefully pulled it back and went in, closing the door behind him.

 Immediately Byeong Ho entered, they all shifted meters backwards. He looked at Da Eun, he could see both fear, questions and concern in her eyes. How would he explain to them that he was the ruler of the zombies, the first made. He couldn't explain to himself talk more of them.