The Rise of Martial Arts in the Dark Doomsday

In 2030, a huge space fleet broke into the solar system. Humanity thought the end was coming, but this fleet ignored the earth and humans. They stopped on the sun to absorb energy. After 3 days, they left and the sun went out. Just like when you go to a gas station to refuel, you don't pay attention to the movements of a nest of ants. After the sun went out, the earth fell into a disaster. Plants died on a large scale, the temperature dropped precipitously, and wars began to break out. The day when the sun goes out is called Mahakala.