A man is summoned to a world to become a dungeon core. With no memories of his past life, the newly reborn dungeon core is confronted by man wanting to make him part of a system. However, the next thing he knows, he's whisked away again to another world, this one full of high-tech magical stuff. It turns out that the man he'd encountered is apparently a tyrant bent on controlling several worlds and sends demons to bend those worlds to his will. After choosing the name Null for himself, he finds himself thrust into a world as a dungeon core without a clue of how to be a dungeon core. Fortunately for him, once he gets his feet on the ground, he's able to join the dungeon guild, A whacky collection of dungeons fulfilling tasks to make the world a better, less demon infested place.  I'm going to be perfectly honest here. I'm mainly writing this to be a story that I enjoy. That's the main point of it for me. I'm having a lot of fun doing so as well. I really hope you all enjoy it as well. That being said, I have no idea how to write a good synopsis. I will edit it to make it better when I figure out how to do so. In the meantime, I hope you all enjoy the story. Cover art was created by DALL-E. I'm not a good artist.