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

A man walks into a pub one day and is astounded to discover a magical portal behind the bar. He steps through and finds himself in a different world! He walks around for a while and then decides to go back through the portal. When he arrives back in the pub, he finds that everything has changed! The people are different, the drinks are different, and the atmosphere is different. He has a great time exploring the new world and returns to the pub every day. Eventually, he starts to feel like he’s part of the community there and decides to stay. The pub slowly starts to change around him, until one day it’s completely different. He’s not sure what happened, but he’s glad he stuck around to see it.