Saved Two Elves at the Beginning

This beautiful elf! I saved you. Why, you still hate humans and want to kill me? This world is actually just a little bit more advanced than the primitive world? Is there still magic in the world? Are there cat-eared girls and fox girls? Can I still occasionally pass through the Void Gate? Etc! I just bought a title and occupied a small place. You tell me that the enemies of the original title owner are coming to occupy it. What should I do? What to do? Forget it, go back to the original world and bring some things to build the city wall quickly. Otherwise, how can this short and broken city wall be blocked? What should I do if I run out of money? What to do? Why don't you go to the Void World and see if you can get something valuable? This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.