Product description ※Please note that product information is not in full comprehensive meaning because of the machine translation.
The main character, Sigmund, who had become the weakest ghost when he reborn into a different world. After leveling in a cave to survive somehow, if you notice it, you will become the most powerful "Immortality King" in evolution! It is the opening of a heartwarming Different World Fantasy where you can enjoy production life by setting up a base in a forest full of powerful demons and increasing the number of followers and making go Rem.