Koichi Kotoriyuu, who was working for a black company as a corporate animal, retired after suffering a physical injury. When he was looking for a job after recovering, he received an interesting email from a job site. I went to the interview and found out that it was a simulation game about urban development. When I went to the interview, I was asked to build a country by a god of another world. This is a story about an ordinary old man who is rejuvenated to the age of 20, gets a cheat from God, and establishes a country while traveling back and forth to Earth. The story is about an ordinary old man who is rejuvenated at the age of 20. I’m aiming for a happy ending in the end, despite all that happens. It’s a story about turning a medieval world into a near-future world with magic and cheats. It’s a story like that. This is a story about a medieval world that is turned into a futuristic world with magic and cheats. It also takes place on Earth, but in a different world line than the real world. There will be non-existent countries, incidents, etc. It’s a harem. I wonder if I can have 100 lovers? I don’t know