One of the bonus sketches from manga Vol. 21. Looks like there's another one too but I haven't managed to find a full image of it yet.
I really like this one, not only because I'm pleased to see Hilmes feature but because of the composition. The shadowy, mad-looking Gotarzes, whose mind was addled by the influence of sorcery. Osroes, whose eyes betray the inhuman decision he made about the child he raised as his son and pretended to love. Andragoras, with darkened eyes, looming over Hilmes in the foreground. Of them all, Hilmes is the only one whose eyes are clearly visible/drawn normally, and even then it feels symbolic that his right eye is partially obscured on his burned side.
The dark and bloody history of the Parsian royal family literally looming behind him, its mark left on his face. I hope he can break free of it.











