When Astralyn was younger they took a trip to the icewing kingdom, and had gotten lost on the outskirts basically being like "yeah no its too cold here im out ".On their way out they had a fight with an icewing who turned out to be an animus, the icewing had cursed Astral in its last dying breaths forcing Astral to forever be between the worlds of the living and the dead, so quite literally being a ghost.

At first Astralyn didnt think much of it and went on with their life as normal, but other dragons always just kinda strayed away from her, many saying despite the tribes nature of being extremely hot they were almost cold to the touch, and many feel a dark and cold aura around them.

Later on when they were in their late teens the curse somehow got worse, making it so Astral was not always being able to be seen as others couldnt belive they were real, thinking he was a figment of their mind, overall ending up ignoring them.

Nowadays they live with Meris as their roommate, and help out Stein in their research. Astralyn want to learn more about their curse, and right now is focusing on their skeletal structure, trying to see if it is still there. Stein helps them out with it in exchange for the extra knowledge and help. When at home with Meris they are often seen in their room full of books , almost always having their nose in one of them.