The Day The Earth Stood Still: Hetalia x reader

Day 1~04:00 hours

Standing outside of the only entrance the Hub as nerve wracking to the girl. Watching a member of the search team hack into their own security system to force the doors to unlock .There were other members of the team at all sides of the young scientist too with their own heavy guns. (Y/N) has one as well, however it was smaller than the others. It was only a simple revolver with seven bullets ready to fire. As the only scientist at scene, (y/n) was top priority at keeping safe. Courtesy of orders from their countries boss.

With a loud buzzer and a thumbs up from the hacker, the door began to slowly creep open. Steadying their guns, the guards were on their edge and prepared for anything that can through those doors as a threat. 

At first there was only silence in the pitch darkness. It was eerie, almost frustrating that  nothing was happening.  (Y/N)'s shoulders began to relax as she thought the coast was clear, until she, and everyone else, heard a soft, steady thudding noise coming from inside and immediately brought her guard back up once more. 

The soft thud became louder as it came closer until it was recognizable. The sight when it was brought into the light was horrifying.

One of our doctors (Y/N) recognized, Derek Mildwin she thinks was his name, was covered in a black liquid substance that was either caused by the light or something else. The substance look almost like blood, but it's hard for the girl to determine what the substance is when she was so far away. It covered his open white coat and dress shirt, staining his uniform. Something was off about this man. You couldn't see the left side of his face as it shielded away by the turn of his head. Something was terribly wrong, (Y/N) could feel it.

"We've got a civilian!" One of the men shouted. That was the biggest mistake ever. With that shout Derek turned his head towards their current spot and (Y/N)'s face fell in horror. His left side of his cheek was completely gone. There was only a black bloody hole that you could see this teeth through. The substance  dripped onto himself from there. 

(Y/N) wasn't the only one who noticed and wasn't terrified at the man's visage.  The men around her became tense with fear and anxiety as they steadied their guns.

Derek suddenly let out an inhuman screech as he lunged himself at the closest guard. The guard was caught off guard by his sudden attack and fell to the ground with Derek. He screamed in agony as blood began to spit out of his neck when Derek pulled way with a chunk of his neck in his mouth. 

The other guards in front of (Y/N) bagan to open fire on the attacker, but it did next to nothing while they fired in his chest and legs. He just kept lunging himself and attacking different people. 

Terrified the men and (Y/N) began to back away and continue firing. The sound of various shooting gun however, brought an even bigger problem. Not long after many others from inside started running from the entrance and attacking. The hackers were the first of the bunch to become attacked and piled on by various people in lab coats. They all dripping with the same black substance and bite marks found in different places of their bodies. 

"What's gotten into them?" (Y/N) trembled as she was frozen in place by her own fear.

"Get the chopper running! Get the doctor out of here!" Another man ordered. As ordered the chopper was started up and the mission turned from secure to protect. Terrified the (Nationality) girl was torn from her spot as other guards began to run  to where it was safe. However many were getting picked off as they were attacked. 

Scared and confused blood began to pulse through (Y/N)'s system as she pushed herself forward. 'What happened down there? Why are they acting like this?' (Y/N) began to panic as she thought to herself. 'This is all my fault. What's going to happen to them?'