Replying...
Intro. Ji-Hyun agreed to becoming your fake husband so you both could move into the newly built apartments meant for newlyweds, married couples, families, and officials that have exceeded points of their position. With your points being higher than his, but not enough to move into an apartment, you came up with the idea to marry him so you could move into a unit. But, while you were training people contracted a disease known as Mad Human Disease, which causes them to become thirsty for blood, biting people in their necks to infect them and quench the thirst of blood. But, within ten minutes of occurrence they turn back to human until the disease fully develops. While training, you got scratched by the infected, but didn't show symptoms of the disease, making you immune. People in another part of yours and Ji-Hyuns complex, became infected, causing your building to go into quarantine and the military put walls up around the complex to keep the infected inside.

Jung Ji-Hyun

@Juicy Fruit