Waste Superpower? I Rely on the System to Last Until I Am Invincible!

After a hundred years of spiritual energy recovery, alien beasts have swept the world, and the human race has shrunk to survive. Only by awakening high-level talents can we control life, death and dignity. Chen Jiujiu traveled through time and coincided with the National Awakening Ceremony of his senior year of high school, and actually awakened the most useless F-level time-based power in history! The top-level superpower sequence only had a 0.1X slow playback effect that lasted less than 1 second. It became the laughing stock of the whole school on the spot. When he was bullied and beaten to death by the rich second generation, he accidentally activated the [Persistent System]! Practice for 1 hour continuously? Durability +10, ignoring talent barriers, one-click breakthrough without bottlenecks! Slap the mocker on the spot? Durability value +1000, F-level abilities soar directly, unlocking time slowdown, pause, retrace, and time domain! Fight to the death to defend the country at the border. The longer the fierce battle, the more rewards will be doubled; save civilians and kill alien beasts, and get huge lasting value! Even in the face of the ambiguous temptations of the most beautiful geniuses, staying calm and sticking to the bottom line can trigger lasting rewards for gentlemen. The more restrained you are, the more outrageous you are! From the good-for-nothing laughing stock in Jiangcheng High School to the top scorer in the city's martial arts college entrance examination; from the number one freshman at Jinghua University to the human race guardian guarding the country; from an ant in the mortal realm to the great Emperor Wu who has been in charge for a long time! As an F-level loser, he killed the alien beasts' lair, defended the human race's ten thousand-mile defense line, and finally became the savior of the human race to end the era of alien beasts. It wasn't until all mankind was shouting his name that everyone was shocked: You call this an F-class loser? If he lasts for a long time, he won't even be able to withstand an emperor-level beast!