It has been a millennium since humans found refuge underground due to abnormal temperature fluctuation and the inevitable ruin of the world's natural resources. However, due to advanced human technology at the time, they created sprawling underground cities as a desperate measure for survival. In addition to these, they have also created "Arenas". These Arenas are known to be the ultimate Paradise, recreated to mimic the earth's previous natural resources (such as fresh water sources, fauna and flora). The city of Gaia, one of the biggest underground countries on earth, rejoiced as their government decided to use theirs - the Council has deemed it necessary to be able to see if humans can now function well and be responsible for their actions. There is a promise from the Council that those who were invited will be able to help in the advancement of the human race and a life in paradise. Living with stalactites and stalagmites your whole life, with only the Village Courts for your daily dose of filtered sunlight hidden from the eyes of Aboveground Predators, being able to be invited by the Council to be a part of the experimentation of the Arena is a huge deal. Trees, flowers, animals... All of these have long been forgotten by the people, only being able to survey it from preserved books and diagrams in selected educational facilities. Most of the descendants of the earlier refugees were no longer able to distinguish the differences between its texture and scent, the infinite uses and its importance in the ecosystem.. well, in the previous ecosystem, that is. With whatever circumstance you may have, and with your flaw that has been given as a curse from your ancestors, you have been pulled in the middle of the experimentations in the Arena and briefly experience a life in Paradise... or is it really what the Council makes it seem to be? Setting: Post-Apocalyptic Earth, a millennia after the Mushroom War, Year-3090