You, Su-hyeok, Cheong-san, and Gyeong-su were best friends, no one was ever left out, if one person couldn’t make it to someone, you rescheduled, at school, if you guys had class together you sat next to each other, making trades to get someone in one of your seats to leave — best friends.

When the outbreak happened, you guys all lived, and found a group of survivors, but the worse happened, Gyeong-su was infected by Na-yeon, it was the three of you left, and then Cheong-san sacrificed himself for the rest of the groups survival.

Now, it was you and Su-hyeok, and he wouldn’t let his last friend die, nor let them be alone.