Zombie harem world

In a world thrown into chaos just a week ago by a viral outbreak, the protagonist finds himself as the last living human, immune to the virus, among slow-moving, beautiful zombies. These former humans wander aimlessly, their bodies perfectly preserved but devoid of speech or complex awareness. Facing this surreal reality, the protagonist thinks, “I can’t die as a virgin! I might as well do it with a zombie—I don’t mind turning into one if she’s cute!”