Water, air, earth, and sunlight, are the catalysts for the growth of all things. In 2276, everything has long since been exhausted, and humanity can only live within cities enclosed by massive defensive walls.,In the end, things were left unresolved. The surviving humans were indifferent to how they had been destroyed because they had already forgotten. But many people truly understood that greed was the culprit behind their downfall.,Brilliant City, a city built within massive defensive walls. It is called Brilliant City because it was the first human city to utilize planetary unique materials to develop an artificial sun. It is a gigantic city with a population exceeding 30 million.。