January Blues by Jax Stuart

While practically human in a coven of powerful witches, Cody has still picked up an enemy. After an assassination attempt fails spectacularly, his rival summons a demon to get rid of him.
Contracted to ruin Cody’s life, Toth tries everything within the rules to break the perpetually cheerful man. Nothing he does seems to work, and he is pressed to try something else: seduce Cody.
Cody’s hidden magic soon has Toth under his spell and he has to decide if his freedom or Cody’s heart are more important.

January Blues is a 34k spinoff novella from the Sweetwater Pack series but can be read as a standalone. While MPREG can happen in this world, it doesn’t in this story.