The Lonely Island of Humanity [3 in 1]

An unknown monster hid inside the black fog, but probably due to the limitation of the rules behind the door, the fog did not spread into the apartment, so the tenants were relatively safe as long as they stayed inside the building. The space outside of the apartment appeared to be a completely different world in contrast to the safety of the space inside the apartment. Their entire lives were within the apartment, as if something bad would happen to them once they tried to leave the apartment. Doctor Li walked over to close the window like the tragedy that had just happened before their eyes was not registered in his mind. He did not appear to even notice the blood stains that still lingered on the windowsill.