After spending twenty years in seclusion, I descended the mountain with invincible martial arts. In the depths of the apocalypse, I slay zombies, destroy demons, and suppress all races!
While everyone else struggles to survive, I sweep through the ages!
I descend to subdue demons and ascend to sainthood through martial arts. I am the only god in this apocalypse!
(High-martial arts + apocalypse + demon-slaying + invincible protagonist. Pure wish fulfillment, no heartbreak, so read without worry.)