Exchange letters and not much else

Another month has arrived, and the theme for June is Time Loops. How do your characters react to living the same day/week/other time period over and over?

Posting guidelines are here, and if you have any recs or prompts you'd like to share, you can leave them in the comments using the templates below:

For recs:
<b>Title:</b> <b>Medium:</b> <b>Summary:</b> <b>Link:</b> <b>Why you're reccing it:</b>

For prompts:
<b>Medium:</b> <b>Fandom:</b> <b>Characters/Pairings:</b> <b>Prompt:</b> <b>Open to gifting Yes/No:</b>

This theme will last until 30th June.