A young man who had longed for stories of good and evil since childhood lost his life in a tragic accident and was reincarnated as a boy named Chrono Mak in another world. He learned that in this other world, there is magic and witchcraft, and depending on how you train them, you can become as strong as you want to be, so he decided to become the strongest demon king in order to recreate the story of justice and evil he once dreamed of.

A certain middle-aged man, Saito Kenji installed a mysterious smartphone app “Guide to Creating Another World”. It was a game in which you could freely manipulate planets, lives, tribes, eras, and all sorts of other things. However, as a result of being transferred to the world on the screen through a new function, he found himself able to travel back and forth to Japan! You can explore and time travel in other world, and the different abilities you get can be used either way, and use dimensional storage. And you can take things and people with you as much as you want…! “Hmm, this is an adventure you have to have, isn’t it?” I’m busy resolving problems in two worlds, and leveling up in between. Occasionally, he gives an oracle to cause the other world to shake violently, or tames a nine-tailed girl with tuna mayo–? The life of an Ex-salaryman with an “anything goes” God life START!

I got transmigrated into a game I’ve never seen before. I thought it was a top-notch RPG and spent 30 years on it. I retired as a war hero and planned to spend my remaining time leisurely. But it turns out, it was an academy story?