Hyo is one of the members of the Order, a group of the most powerful members within the JAA. Although he didn't make his fame at a young age, he became a formidable assassin over time.
Hyo has a ferocious looks who appears to be a tall and brawny man. He often wears a black suit.
Despite being colleagues, Hyo finds Nagumo untrustworthy and often shows hostility towards him.