The Reverend of Teachers at Kazalm. She is an old friend of John, Erin&#039;s foster father, and helped Erin with her times at Kazalm. She decided to let Erin take care of Lilan because Erin had the experience of witnessing a wild Ohju family breed, and was the one who concluded that Lilan saw Erin as her mother. Esal looks out for Erin as a foster mother.

In the land of Ryoza, the neighboring provinces of Shin-Ou and Tai-Kou have been at peace. Queen Shinou is the ruler of Ryoza and her greatest general, Grand Duke Taikou, defends the kingdom with his army of powerful war-lizards known as the "Touda." Although the two regions have enjoyed a long-standing alliance, mounting tensions threaten to spark a fierce civil war. 
 
Within Ake, a village in Tai-Kou tasked with raising the Grand Duke's army, lives Erin, a bright girl who spends her days watching the work of her mother Soyon, the village's head Touda doctor. But while under Soyon's care, a disastrous incident befalls the Grand Duke's strongest Touda, and the peace that Erin and her mother had been enjoying vanishes as Soyon is punished severely. In a desperate attempt to save her mother, Erin ends up falling in a river and is swept towards Shin-Ou. 
 
Unable to return home, Erin must learn to lead a new life with completely different people, all while hunting for the truth of both beasts and humanity itself, with tensions between the two regions constantly escalating. 
 
(Source: MAL Rewrite)

At the beginning of the story, Erin is a 10-year-old girl who lives with her mother in the Tai Koh Region. She has a big love for animals, especially the Touda, dragon-like creatures used in the war. 
Her mother Soyon was originally of the Mist People, an ancient clan whose members have green eyes. Because Erin's late father was the son of the chief of a village of Touda breeders, Erin and Soyon live there and Soyon is the head Touda doctor. 
But one night, the Kiba, the Duke's strongest Touda, mysteriously dies, and Erin's life will be changed forever, involving her into the fate of the whole country. 
The series tells the story of Erin's life from childhood into adulthood.