Using the unique skill that only I can use, I aim to live a rich slow life! The protagonist, Allen, is reincarnated in another world and one day realizes that he has the unique skill that only he can use. Using this power, Allen travels between Japan and the other world, making money by selling various items to entertainment-hungry people from the other world, as well as people who have been transferred or reincarnated. In the meantime, he makes the acquaintance of the daughter of a large corporation and the princess of a kingdom in the other world, and enjoys the other world to the fullest...!!
