At the Beginning of the Apocalypse, My System Is Not Very Pure

Doomsday catastrophe and moral decay. Former mercenary Xiao Ren is bound to a very unreliable system - improving his strength depends on "building a good relationship" with a beautiful survivor. So, he took in the school beauty, rescued the female doctor, and surrendered to Sister Yu... In the cruel apocalypse, his "Renhuang Castle" was rumored to be a joke because of the beauties, and everyone laughed at him for being an absurd and lustful hypocrite. They didn't know that Xiao Ren's power had quietly reached its peak along with his "notoriety". When the world-destroying aberrations arrived and everyone was in despair, the man they laughed at took a step forward, and behind him stood the entire world he swore to protect. He is Xiao Ren, a misunderstood "villain" and the only living god in the apocalypse.