Bloodbath Horror

When I returned home from studying abroad, I noticed an 'X' written next to my front door. I didn't pay attention and simply wiped it off. But when I returned home that day, the 'X' reappeared. I thought it might be some kid playing a prank. That night, I was working at home when loud cartoon noises came from the neighbor's apartment. I was too annoyed to work, so I knocked on the neighbor's door to discuss it. The next day, when I left for work, the 'X' on my door had turned into a '0'. Just as I was wondering about it, the neighbor's door suddenly opened, and when I saw the neighbor, I knew danger was coming...

You live alone in the countryside, with only one neighbor, a couple who raise cows. There's a lawn between your two houses. One late night, you were woken by a commotion, then heard cow mooing, the sound of a cow breaking through a fence, and a cow eating grass. After some time, you heard something hitting your front door, but you ignored it and went back to sleep. The next day, the police knocked on your door.

Recently, fewer people have been coming to the gym, but the boss's mood has been getting better and better. John, who was injured a few days ago, asked the boss for time off and discovered the boss's secret...