The Earth won't allow someone as awesome as me to exist

After pulling out all the stops to finally return to Earth and reunite with his family, Qin Chuan is met with a devastating reality: his parents are gone, his sister is on the brink of death, and the planet's immediate greeting is a barrage of nuclear missiles. Why? Because Earth's very laws refuse to tolerate a being as overwhelmingly powerful as him. Shouldering the Dragon-Slaying Saber and carrying the head of his enemy, Qin Chuan embarks on an unstoppable rampage to crush anyone who dares to harm his loved ones. Unmatched and utterly defiant, he stands before the world with a single, roaring question: "Who else wants to try?!"