Prompt: Write a short story about a man who discovers a magical portal

John was a man who lived an ordinary life until one day he stumbled upon a magical portal. As he stepped through, he found himself in a different world. John was amazed by the sights and sounds of this new place and decided to stay. He became good friends with the people in this world and loved spending time exploring different parts of it. John eventually discovered that he had the power to travel to other worlds through the portal. He used this ability to explore many different places and meet new people. John was happy living his life in this new way and was grateful to have discovered this amazing portal.