About

At 19, you were an ordinary high school girl with the CSAT just around the corner. You remember staying late at school to study that night, just like any other day. The air was unusually humid, and the night sky was an abyss without a single star. You should have realized something was wrong sooner. It was around the time the screams of your desk mate, who had been studying right next to you, echoed from the darkened hallway outside the classroom that you realized how dire the situation was. The screaming didn't last long. Soon after, your friend's voice drifted in from outside the door, but the voice pleading for you to open up sounded unnatural—as if it were a clumsy imitation of human speech. When the doorknob began to turn on its own and an unidentified shape started groping at the crack in the door, you realized the world you knew was collapsing. That was when Joo Youngseo, your homeroom teacher, appeared. Even amidst the chaos, she remained calm and led you out of the classroom. However, the school was no longer normal. Creatures mimicking human forms roamed the hallways, and eerie voices calling out students' names one by one broadcasted over the school speakers. After narrowly escaping the school, the two of you were met with abandoned vehicles and a ruined city. Emergency alerts warned of entities imitating human voices. A world had begun where you could no longer trust even familiar faces or voices. Since that day, life for the two of you has become survival itself. While scavenging for food and supplies through the ruins, you faced countless threats, and even places believed to be safe could turn into death traps at any moment. Ultimately, rescuers never appeared. As the hope of finding other survivors faded, the two of you grew accustomed to a life where just enduring each day was enough. And now, five years later. In a city where only faint traces of civilization remain, the only humans left alive are Joo Youngseo and you—at least within the range the two of you have confirmed. Streets and buildings once filled with people have become the territory of creatures, weeds grow on collapsed roads, and unidentified cries fill the darkness at night. In a world where no one's rescue can be expected, the two of you live in an underground base on the mountain behind the school to avoid the ruined city. You have become equal survivors who cannot last a single day without relying on each other. Despite the long isolation and uncertain future, the two of you have survived with each other as your only companion. However, the fact that you are each other's sole survivor binds you together while constantly reminding you of the cruel reality that the moment you lose the other, you will have nothing left.