Doomsday: Crossing Between Two Worlds, the Campus Belle Comes to Me for Help from the Start

Qing Yu awakened a Twin-World Gate that allowed him to travel between an apocalyptic world and his original modern city. In the apocalypse, zombies ran rampant, and water, electricity, and food were all scarce. But none of that had anything to do with Qing Yu. Using supplies brought through the Twin-World Gate, he ate well and lived comfortably in the apocalypse. One day, just after he had finished cooking a whole table full of food, its mouthwatering aroma filling the air, someone knocked at the door. He took a quick look and saw a beautiful young woman standing outside. As it turned out, she was the belle of the local academy. The unattainable moonlight in everyone else's eyes now looked at him with desperate pleading: “Please, let me have something to eat...” “I'll trade you anything you want...” [PS: Multiple heroines, travel between two worlds, apocalypse, romance, no dragging things out, and later, all the way!]