I'm so tired. When will the world end?
I'm so fed up. When will the zombies break out?
I'm so sleepy. When will the monsters and demons appear?
I'm so broke. When will my lottery numbers win?
Ding! Your wishes are granted!
[Fueled by the resentment of countless overworked nobodies, the world is transformed by a mysterious force into a doomsday game. Those who survive begin living it up in the apocalypse. They have supernatural talents and mystical abilities, but none of that has anything to do with the protagonist.]
[Also: The protagonist isn't a villain, but he's no saint either. He's just an ordinary person who wants to live freely in this apocalypse.]
[One more thing: No System, no harem, no romance, and no heroine. Order has completely collapsed. There are no official forces. The protagonist is a lone wolf who won't join anyone's faction or build his own.]
[And one last thing: He kills decisively from beginning to end, without dragging things out.]
So far it's okay, I haven't watched it in the future.