Akira has short brown hair and brown eyes, typically dressed in a black suit, red tie, and black shoes. Before the vanishing of the city called Lost, he served as caretaker for Yuki and her younger brother Souma during their childhood. Following the incident, he disappeared and was presumed missing. Deeply loyal to Yuki, he displays a protective nature toward her. After Lost's destruction, he aligned with a mysterious organization, functioning in roles like bodyguard and magical familiar.