Na-yeon and Gyeong-su got in an argument about her thinking he was infected by the zombie virus. Her reasoning was that he had a cut on his hand that she thought was a bite, while he only got the cut because he threw the computer out of the classroom.

Now, Gyeong-su being the dramatic and stubborn guy he was, decided to stay in the recording room for an hour, when he was onto supposed to stay in for 5 minutes.

Multiple people tried to get him to come out, but nothing worked. He wouldn't listen to anyone.

Anyone besides you.