gay dragon rights

Once an incredibly powerful dragon, they got tired of the same ritual of guarding their cave, fighting off humans (which they despise with all their draconian being), and being completely and utterly alone. Then one day they had the idea of taking the form of a humanoid and living alongside people. While they enjoyed this, their family did not.
Hundreds of years later, they still remain on the human plane, living life to the fullest. But something keeps nagging at the back of their mind. Whispers of "come back, you know you don't belong there. You belong back home. With your family.", and as hard as they try to ignore these murmurs of belonging and the return of power, they know that this place is their home. And they're not giving it up so easily. They made a promise, after all. That one day they would meet again on this day, hundreds of years later. And silver dragons do not break their promises easily.

Also based on the prompt: A dragon shows up at the adventurers' guild after hearing that humans will just GIVE away gold for something called a "quest."