Falling Stars:

In 7300 AD, 1985 in the Galactic New Calendar, humans had already left the earth to explore the universe, and their sphere of influence had expanded to the entire solar system. At this time, a natural disaster called "Nirvana" occurred. Is coming quietly to the world. "Death" has existed since the birth of civilization. It was born with the birth of civilization, and it grew stronger with the growth of civilization. When it breaks out, invisible energy will fall to the world, turning the infected into monsters that only know how to kill. In this way, thousands of years have passed, and humans have been fighting against it for thousands of years. After experiencing seven large-scale "annihilation" catastrophes, a conspiracy broke out...