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

One day, a man discovered a magical portal that led to a world of magic and adventure. He eagerly entered, only to find himself in a different place every time he tried to return. The man began to explore the world, finding new and exciting ways to experience the magic each time he portal visited. Eventually, the man even started to make friends with the creatures of the magical world, and he never wanted to leave.