How does the Sandman end?

He appoints Lucien as his co-ruler and librarian, and the possibility of a second season is hinted at with the arrival of demon lord Azazel, who asks Lucifer to lead an army against the Dreaming.

The Sandman ends with Dream returning to the Dreaming, but he has changed. He is no longer the haughty and imperious ruler he once was. He has grown and learned from his experiences, and he is now more compassionate and understanding. He also realizes that he cannot rule the Dreaming alone, and he appoints Lucien as his librarian and co-ruler.

The ending also sets up the possibility of a second season. The demon lord Azazel has visited Lucifer in hell and asked her to lead an army against the Dreaming. Lucifer refuses, but she does say that she plans to do something that will make God "absolutely livid and bring Morpheus to his knees." This suggests that there is more conflict to come in the Sandman universe.

Overall, the ending of The Sandman is satisfying and leaves the door open for more stories. It is a fitting conclusion to a complex and ambitious series.

Here are some additional details about the ending:

Unity sacrifices herself to save Rose. Rose was destined to become the dream vortex, but Unity was the one who was actually meant to be the vortex. Unity was trapped in the Dreaming when Dream was imprisoned, and she was released when Dream was freed. Unity knew that Rose was in danger, and she sacrificed herself to save her.
Dream appoints Lucien as his co-ruler. Dream realizes that he cannot rule the Dreaming alone, and he appoints Lucien as his co-ruler. Lucien is the librarian of the Dreaming, and he is also Dream's closest friend. Dream trusts Lucien to help him rule the Dreaming wisely and justly.
Azazel visits Lucifer in hell. Azazel is a demon lord, and he is one of the most powerful beings in the world. He visits Lucifer in hell and asks her to lead an army against the Dreaming. Lucifer refuses, but she does say that she plans to do something that will make God "absolutely livid and bring Morpheus to his knees." This suggests that there is more conflict to come in the Sandman universe.

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