When the last Winchester standing is on the verge of collapsing under the weight of it all, there's still someone he can count on. Sam & Cas friendship, post season 9 finale.
Sometimes, a werewolf's heart isn't the only one shattered by a silver bullet. It's up to Sam and Dean to pick up the pieces. A story of losing and finding hope again with the help of a desperately needed heart-to-heart, a starlit night sky, and of course the best brother in the world (aka nostalgia-fueled coda to 02x17 'Heart'). Gencest bang 2022.
Nothing, not even a force of nature, can keep Dean away from his brother.