The End of the World: Pick up the Elf Queen at the Beginning

The world was wiped out by a rain of blood, and 90% of the world's humans turned into zombies. Two months before Chen Yu was reborn in the apocalypse, he quit his job, emptied his savings, and stocked up enough supplies in the villa to survive for five years. What's even more outrageous is that the apocalyptic survival system he was bound to sold in the mall was not only firearms and ammunition, but also strangely styled things like [Elf Contract Seed], [Succubus' Invitation], and [Dragon Blood Potion]. It wasn't until he was cleaning up zombies that he actually opened a glowing seed from the system reward. That night, the seeds sprouted, and out of the light came a seriously injured elf queen with silver hair and pointed ears. She looked at this human being who remained unmoved in the face of the zombies, and said the words that changed the fate of the two of them: "Mortal, sign a contract with this emperor - you will help me heal your wounds and restore your divine power, and I will help you... Ascend to the top and become king in this doomsday." Chen Yu just pushed up his non-existent glasses and responded calmly: "Is food and accommodation included? How is the salary calculated? Are there five insurances and one housing fund?" [Apocalypse + Rebirth + System + Elf + Farming + IQ Online + No Virgin]