"Windows to the Soul" is a very short story by Akril, serving no real purpose except to provide the reader with a possible explanation for the change in Edgar's eye color from blue in King's Quest IV to brown in King's Quest VII.
After Rosella has departed from Tamir, Genesta comes to the belated realization that Edgar is not an unfortunate changeling, but a Fairy like she is. As she is debating whether to tell him, she notices the sky blue of his eyes has changed to a muddy brown. Genesta then realizes that no matter whether or not she tells Edgar the truth, he has already chosen the realm of earth, and Rosella, over whatever wonders the Fae could offer.
-  - "Windows to the Soul" on Akril's website