Kagami Taira is an ordinary office worker you can find anywhere. “Come to think of it, I was a magician.” One day, he recalls his previous life as a magician in another world. However, there is no place for magic in modern Japan. At a loss of what to do, he tried to use teleportation magic and… He was able to return to his previous world. However, if the danger of his power becomes known, people will start keeping an eye on him in both worlds. Thus, he decided to do everything in moderation and live the life of an adventurer leisurely in another world.