The Playboy of the Apocalypse by Sarah Evans

Yang Zi, a reserved yet sexually repressed man who wouldn't give a fart even if you beat him with three sticks. In the post-apocalyptic world, he encounters a mother-daughter duo as beautiful as twin flowers, an adorable loli just beginning to blossom, and the top star of a high-class brothel, exuding every conceivable charm... Outside, corpses litter the landscape for miles, and monsters run rampant. Inside, the air is filled with a faint, alluring fragrance, and waves of voluptuous breasts rise and fall. After his spirit was put to the test, Yang Zi's mighty frame trembled time and again until the waves finally surged majestically and the sunlight shone brilliantly. He became a man of boundless passion and infinite charm in the post-apocalyptic world.