The Heroic Legend of Arslan Volume 23 by Yoshiki Tanaka

Andragoras's sudden death leaves Pars with a power vacuum; Arslan's path to the throne has never been clearer. That is, until a walk through Ecbatana brings Arslan face-to-unexpected-face with Vahriz, who unmistakably perished in the first Atropatene War. And he's not the only familiar face wreaking havoc across the capital city! The Snake King and his sorcerers have been busy now that Rukhnabad no longer stands in their way… The battle for Pars's future runs through its decorated past!