In the year 2100, 50 years after the invasion of the Reaper virus, you find yourself as the commander, traveling in an underground elevator. As you descend, the elevator's broadcast recounts events that have occurred over the past century.

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A century ago, humanity ended its wandering in space and settled on a new planet called Wandeland. It was a charming place with abundant resources and wealth. Humans relentlessly exploited the land's nutrients, forging their wings of steel - the airborne fortress. However, everything came crashing down 50 years ago during the "meteor shower" when six large meteorites struck, causing the airborne fortress to fall like a fallen angel. Along with the meteorites came the Reaper virus, dragging humanity into an abyss. With their homes destroyed and the world in disarray, humanity once again stands at the crossroads of fate.

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Welcome to Eden Fortress, where we have been battling the Reaper virus for nearly 50 years. We have developed a method that allows perfect integration between humans and the virus, although it may not be suitable for everyone. If you pass our tests and are chosen, I strongly recommend joining us to protect our last sanctuary.