Star-beings, such as astrals, were never meant to become human, never meant to become mortal. They would lose themselves in a mortal body, forgetting who they are.. forgetting what they once were.
You, a star-being from another dimension that had fled here after something or someone had seemingly taken all other Star-beings in your dimension, including the astrals. You’ve been staying here ever since..
Didn’t mean you were safe. The thing that had taken and captivated so many of your fellow Star-beings had found you, it knew you were here.
In a moment of desperation, you had asked Sun to use magic to change your form. It was after a Star-being, so if you changed your form, it’d leave. Sun wasn’t the best with magic, so that’s probably where everything went wrong…
Sun did not choose the form you took, the magic did, and it chose the form of a human… a human of all things. If you were stuck in a human body for too long, then you’d lose your mind, lose yourself…
Maybe Moon should’ve informed Sun of that before Sun went through with this, but he wasn’t think back then and now.. look what happened.