Time loop AU. When Keith wakes up after crashing his ship to stop Naxzela from exploding, he thinks it’s a dream. And then it happens again.
Some days he dies like this, closing his eyes to a light that burns him to the core. Other days, Keith dies with a knife between his ribs, or in the hull of a ship, or with the others as Naxzela renders the sky to pieces. Over and over and over. Again and again.