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

Every day, John opened his mailbox to find a few pieces of mail. One day, he found a small envelope that sent a chill up his spine. The return address read, “A. King.” John had never heard of the person or the company, so he ignored the envelope. A few days later, another mailbox arrived, and the same thing happened. John decided to open it and find out what the deal was. Inside was a small letter with a magic portal symbol on it. The letter instructed John to step inside the portal and find his destiny. John was hesitant, but he decided to go through the portal. When he arrived, he found himself in a different world. John was stumped as to what to do next, so he decided to wander around. He came across a beautiful castle and decided to go in. As he entered the castle, he found himself in another room. In this room was a magical throne, and sitting on the throne was a man with a familiar face. The man introduced himself as A. King, and he explained that John was chosen to be the next king of his world. John was overjoyed at the prospect and decided to take the throne.