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

Johnny was browsing the internet one day when he came across a mysterious portal. Once he clicked on it, he was sucked inside. He found himself in a fantastical world full of creatures he had never seen before. He was also able to talk to the creatures and learn their secrets. Eventually, Johnny found a way to return to the real world. He was amazed by what he had seen and decided to keep the portal secret from everyone.