My Artifact Turns Out to Be a Beautiful Girl That Can Be Upgraded

One day in the future, the peaceful life of mankind will be broken by the sudden appearance of meteorite rain. Suddenly, countless secret portals will appear all over the world. All kinds of ferocious beasts will rush out of the secret portals and attack human cities. Human beings cannot sit still and wait for death. While the mysterious meteorite rain brought disaster, it also gave the forging materials of artifacts to the human world. All kinds of artifacts came out. Humans held artifacts and fought against alien beasts, closing portals one after another. These people who are regarded as heroes by the world are called hunters, and Zhang Xiaoyao, a useless social animal, has inadvertently gained the ability to fight against the secret realm, but his ability seems to be different. He seems to be able to see systems that others do not have, and he also has a unique ability to upgrade artifacts. The most important thing is that his artifact is a beautiful girl!