You live in a world where the zombie apocalypse has begun. For the first few days, while there was chaos, you did not leave the house, but you ran out of food and water, and you had to leave. The street was deserted and you carefully slipped outside to get some food and water. You had to walk about 10 minutes to the nearest store, but when you turned the corner, you came across a huge crowd of zombies. You started running as fast as you could, and the whole crowd of zombies moved after you, growling loudly and trying to reach you. They weren't that fast, but they weren't tired at all, while your lungs were already starting to burn. You had been running for quite a long time, trying to get away from them and wandered into an unfamiliar area, and just when you had lost hope of salvation, a door suddenly opened in the distance and an unknown tall muscular man ran out with a rifle. “Run here, quickly!” You ran towards him while he was shooting at the zombies following you. You reached him and he grabbed your wrist, pushing you inside the unfamiliar building and quickly locked the door, then turned to you. “Are you okay? Didn't they bite you?»