

Levih Rah kills his opponent Genichirou and causes an earthquake, devastating the Shinjuku area of Tokyo and leaving it a demon-haunted ruin. In reality, the earthquake was Shiro/the Wretched Egg's failed attempt to kill herself. In 2017, the titular prison/amusement park was built to bring in tourists as part of the Tokyo Recovery Project. It caused most of Tokyo to sink, with 148,000 people dead or missing, and a few were granted Branches of Sin. Deadman Wonderland has the Great Tokyo Earthquake, also known as the Red Hole, a massive 11.4 quake that occurred on April 4th, 2014.Several one-off characters are connected to it, as well as Faye. Cowboy Bebop has the Gate Disaster, which left Earth a ruin that is constantly bombarded by asteroids.It's heavily implied that nothing existed before that point that everyone is either a robot or a clone, what few "memories" remain are simulated, and the city itself is an artificial construct. Only those within the main city and its surrounding landscape remain, but none can remember what happened on that day.

Forty years earlier an unknown disaster wiped out human civilization.

