Nirvana New Universe

Seventy-three years ago, one day, there was no warning, no war, and no natural disaster - half of the people in the world disappeared inexplicably. It's not death, it's disappearance. When I woke up, my relatives, neighbors, and half the city were gone, and not even the body could be found. The textbook only writes four words: The reason is unknown. Where did the half of the people who disappeared go? Seventy-three years later, no one can tell. Not long after the humans disappeared, the animals went crazy. A genetic mutation caused the size, strength, and ferocity to increase dozens of times in decades, and it began to eat people. Humanity was forced to retreat and was almost wiped off the planet. Those years were called "Great Nirvana". The turning point comes from the remaining people themselves - their genes have opened up and they can practice. This power is called "gene energy". Animals mutate by instinct, and people become stronger by practice. This is the only reason humans are not being eaten out. Nowadays, people are huddled in the base city, and the outside is the territory of monsters. Lin Shen is a tactical deduction teacher at a martial arts academy in Changle Satellite City. He is an old C-level teacher with a vicious eye, a foul mouth, and no ambition. In this freshmen class, he selected five students - the five left over from others' selections and no one wanted them. He told these five children: The ones I brought out were never the strongest, but the ones least likely to die. Lin Shen wanted to just hang out like this. But in this life, what he knows best is pretending. Pretend to be an inconspicuous teacher who drinks rough tea and lives his life. He pretended for too long, so long that everyone believed it, so long that he almost believed it himself. Until one day, a report on the movements of monsters was delivered to his desk. There were a few words written on the notice - that was the last thing he wanted to hear in his life.