Just desserts - Fogandblackcoffee (Anderseeds) - The Magnus Archives (Podcast) [Archive of Our Own]
Summary: “I’m sorry,” said Peter. “I think I misheard you, Martin. You won’t help save the world?”
Martin sighed, heavy and long-suffering. He was always short on patience when it came to Peter, and Peter had made little effort to alleviate that feeling.
Note: The PeterMartin thoughts continue.