Ial serves as personal bodyguard to the Shin-Oh royal family, specifically protecting the queen and princess. His exceptional running speed earns him the national nickname "Godspeed Ial." He maintains a cold, distant demeanor towards nearly everyone, including fellow guards and mentors, prioritizing duty above personal connections.

Childhood trauma, when wajyaku poison killed his sister during the Shin-Oh and Tai-Kou conflict, fuels his intense distrust of political factions and cultivates his emotionally guarded personality.

His interactions with Erin begin during pivotal moments in her life, initially marked by professional detachment. Over time, he develops a deep emotional connection with her, becoming one of the few individuals who receive his warmth or smiles. He discovers Erin's secret past involving her mother's execution and the Touda incident, pledging confidentiality until she chooses to reveal it.

Fearing his proximity endangers Erin due to political tensions and his role, he deliberately attempts distance despite his feelings. However, their shared values regarding animal welfare and peace gradually deepen their bond. He evolves into one of Erin's most trusted confidants, supporting her efforts to prevent royal beasts' exploitation in warfare.

A romantic relationship develops between Ial and Erin, culminating in their marriage and the birth of their son, Jesh. This familial conclusion signifies his transition from an isolated guardian to someone embracing emotional bonds and a personal future beyond duty.