An unknown humanoid life form that is immortal, immortal, and does not know where it came from or where it is going. I prefer the unknown to certainty; I prefer experience to results.
The ending of the story must be loneliness. No matter how beautiful the words you use to modify it, no matter how powerful the spell you use to modify it, you can't change the loneliness of the ending. On the contrary, the constant modifications prove the more that - loneliness
In this case, why not enjoy this moment while you are aware of it?