Global Class Change: From Math Student to Creator

Humanity ventured into space, only to be attacked by alien races and forced back to their home planet. Just as humanity stood on the brink of extinction, a game descended upon reality. Everyone could awaken a class and gain the power to fight back against the aliens.

Afraid of dying, Zhang Xuan gave up an SSS-rank class and chose the Math Student class, which had no offensive abilities whatsoever. When mathematics met physics, a very different path to leveling began. And the aliens were about to meet their sternest father.