Nason serves as an elder of the Ahlyo tribe, a nomadic people marked by their distinctive green eyes and frequent targets of societal prejudice. As a prominent figure among the Ahlyo, he possesses deep knowledge of their traditions and history. His duties include investigating individuals of Ahlyo descent, a task that leads him to examine Erin's background and lineage. Through this inquiry, he confirms her tribal connection via her mother, Sohyon, who suffered persecution due to her heritage. Nason reveals Erin's heritage to her, disclosing her mother's status as an outcast from the Ahlyo. He further explains the tribe's ancestral identity as the Toga mi Lyo, a name originating from their unique eye color. Nason actively intervenes in the conflict involving the Sai Gamulu, a clandestine organization plotting to overthrow the ruling Yojeh. Leveraging his position and knowledge, he provides critical intelligence to Erin and her allies, aiding their efforts to counter the Sai Gamulu's assassination attempts and schemes of destabilization. His involvement highlights the political tensions within the Divine Kingdom of Lyoza, particularly concerning the Ahlyo's marginalization and the broader power struggle between the Yojeh and the Aluhan. Nason's character connects Erin's personal journey to these larger societal conflicts.