Why Are You Crying After Saving the Common People and Being Betrayed, and I Become the Devil?

In his previous life, Qin Hao led the human race to fight against the evil spirits outside the territory, and his achievements were unparalleled! I thought that after I became successful and famous, I would become an immortal and become the number one immortal in the human race. However, at the critical moment of breakthrough, he was betrayed by the Emperor Tian, ​​and even his pillowmates and brothers all turned against him! Qin Hao could only watch as countless of his loyal subordinates died in his own hands! When he was desperate, Qin Hao used the forbidden Taoist weapon, the Time Arrow, and was reborn ten thousand years ago! In this life, he will never be a good guy again! He will become everyone's nightmare! He will make all ungrateful people pay the price with their blood! …