Animenewsnetwork - Episode 10 of The Heroic Legend of Arslan is a deceptive one. Not much happens in the larger plot. Aslan's group is stalled in getting back to the capital and facing the Lusitanians, facing a Parsian insider as an adversary instead. It would be easy to dismiss as "filler" if you skim through it, but looks can be deceiving. It's actually an opportunity for character development for our young hero—or rather, revelation of character. We've watched Arslan grow up across the past nine episodes, but now we see the evidence of that growth.