After I Became a Saint, They All Regretted It

A self-sacrificing hero + one heroine + regret arc + invincible protagonist

Huai Li, half human and half demon, was on the verge of becoming a demon when the Queen Mother of Yong’an enlightened him. He became a wielder of the Dao’s power, destined to save all living beings and turn the world around. He endured the suffering of nine lifetimes, encompassing the three cycles of existence: past, present, and future. Having cultivated through eight lives, Huai Li suffered without complaint. In his ninth life, he put himself on the line and faked his death to draw out every danger, saving the people of the world. But the Queen Mother of Yong’an couldn’t bear to let him die like that, so she sent him back to the beginning of his ninth life.

“The world is full of suffering. You can save everyone else, but who will save you?”

“Even if I had to do it ten thousand more times, I wouldn’t regret it.”