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

It was a typical day at the office, until Jeremy found a magical portal. Once he stepped through, he was whisked away to a wondrous world full of strange creatures and magics he could never have imagined. In this new world, Jeremy found himself a hero, fighting against evil and saving innocent lives. He was so happy in this new place, he never wanted to leave. But eventually, he did return home, and he found that the life he left behind was no longer the same. His friends had all grown up, and the world he thought was so safe was now a dangerous place. But Jeremy still felt at home in his new world, and he still dreamt of returning to it.