Fang Gu was reborn and returned to the high school half a year before the end of the world. He used the information known from his previous life to collect materials and practice hard in order to cope with the arrival of the end of the world in the near future. Spiritual energy revives, beasts mutate, and people seem to have arrived in ancient times! Deep in the endless mountains, a kind of humanoid demon is constantly emerging from a black hole that suddenly appears. The sufferings faced by mankind seem endless, and there seems to be a huge net slowly tightening...
