Great Flood

The Great Flood was the event that brought about the end of mankind, leaving the world totally underwater. To date, there has been no explanation for why this was done.
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== Description ==
The Great Flood was created by the Light Tower 5000 years in the past to cover all the land in ocean.The Submarine (Q&A!) Based on the map Scypho filches from the fueling station concession stand, it succeeded.Scypho Backstory
The timing of the event is based on the fact that Shin is 5000 years old,Goodbye Dohrnii and being the last surviving human on the planet, that means the flood had to occur within the timeframe of his normal life expectancy, ergo, 5000 years, give or take 70 years.
== History ==
Although the effects of the Great Flood are felt throughout the entire story, no specific mention is made of the event, except for the time the author answered a question about it in a Q&A.
== References ==