Toaru Majutsu no Index: New Testament - Volume 14, Epilogue: The Time for the Cradle Comes to an End - More_Purely,More_Bloody.

“The Earth was chosen by the gods, and all humans were sent to another world, participating in a 'Dark Lord and Hero's game'.Billions of humans played the roles of 'Dark Lord' and 'Hero', each needing to choose their initial race at the beginning.Ethan Jackson was matched to the 'Dark Lord' faction and became a Dungeon King.To his surprise, he found that he could see hidden information that others couldn't...[Goblin Dark Lord] Low-level Bloodline, not recommended.[Stone Giant Dark Lord] Mid-level Bloodline, not recommended.[Magical Treant Dark Lord] High-level Bloodline, recommended.[Golden Divine Dragon Dark Lord] Top-level Bloodline, highly recommended!...Heroes coveted Ethan's dungeon, and the treasures within it attracted numerous adventurers.Among them, there were young Lady Knights, the saints of the royal capital, tsundere female magicians, and innocent but naive female priests...Ethan could never have anticipated that.As the game had just begun, the dungeon's Goblin guards caught a Lady Knight and offered her to him as a tribute.”

A detective travels across the United States and becomes an agent of the Los Angeles Police Department.

After getting through the initial confusion, he repeatedly solved strange cases, became famous all over the world, and was called the most legendary detective in history…

- Description from novelbuddy

One hundred fifty-eight years have passed since humanity first spread beyond the bounds of Earth. It has been two years since we made first contact with an alien race. Two years since the war began. A war we are losing.We have been driven back to our last bastion, Earth. Our colonies lie in ruins, our fleets decimated. Our enemy is at our doorsteps, and soon our fortress may fall, but we have one last hope. A new ship that may change the tide of this war, and provide salvation for our race. That ship is humankind’s first ship capable of breaking the lightspeed barrier and bringing the fight to the enemy. Will that ship be able to save our race? Or is she doomed to fail?Note: This is a rewrite of my Earlier work Nomads of Sol.