In the comic, he appears as a prisoner in the first episode, and his name is not given at first. He appeared again at the end of episode 10, announced his name "Aitvaru" in episode 11, appeared again in episode 18, and left after giving Arslan the Bible in episode 19.

A young soldier of the Lusidanian army, he was captured by Pars when he was a child, took Arslan as a hostage and finally escaped. At this time, Arslan's identity was unknown. What he said: "Human beings are equal" impacted Arslan's worldview, making Arslan intend to understand the slave's thoughts for the first time, and also paved the way for his future encounter with Narsus.

The woman disguised herself as a man and took the alias Etewaru to participate in the war in order to fulfill her wish to save her compatriots.

Three years later, he became a trainee knight. After the victory in the Battle of Lusidania, Atropatini came to the royal capital of Pars, Yekbadana, and was with the prince and Yeram by the river. Chance Encounter (Chapter 18 of the Comic) At this time, Arslan’s identity is unknown. He was shocked to learn that his compatriot who was sold into slavery three years ago had died. Before leaving:

Arslan: Aren't you going to kill me?

Estel gave the Bible to Arslan

Estel: ... Use that to study. If you convert to the god Aldabot, You and I are equal, I will not kill you, nor will I make you a slave.