The Devil's Life Begins in the Dungeon

Darkness is the main theme. There is no sun in the underground world, and the light of life cannot shine on this dark world. This is the world beneath the ground, with cities, lakes, and forests all gathered in one place. There are rats, cockroaches, spiders, and bats that are larger than humans, as well as humans who are extremely cruel, or pitiful and hypocritical. There are people with weird abilities here. Beautiful but deadly songs, burning flames, roaring cannons, evil curses... Books record legends that if someone can drive the ship leading to the door to space, he can leave this dark underground city and go to the new world full of light. Ps: The title of the book is also called [Congratulations on discovering this world abandoned by the gods]