The Ancient World of Mysterious Power

Many years ago, a great explosion occurred all over the world, and a time rift was created on the earth leading to the prehistoric world. Facing the alien beasts from the prehistoric times, countries around the world established mysterious organizations and fought for many years before finally sealing the rift, resulting in countless deaths and injuries. Now that the crack seal has been reopened, the protagonist Zero Sanqi-Number, in order to restore peace to the world, went to the prehistoric world and defeated the strongest ruler, the Chaos Demon, to seal the crack again. This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.