1: Kevin Costner confirms exit from Yellowstone.

2: Fans express disbelief over Costner's departure.

3: Costner's role in Yellowstone comes to an end.

4: Speculation surrounds Costner's next project.

5: Costner's legacy on Yellowstone questioned.

6: Cast members react to Costner's exit.

7: Costner bids farewell to Yellowstone.

8: Costner's impact on the show remembered.

9: Costner leaves a lasting mark on Yellowstone.