Ryuhei also known as "Nomen" and "Kagiroi" is an executive of the 2nd Affiliate of Workers and serves as Neko's bodyguard. He is the leader of Kanto's strongest biker gang which is also named Kagiroi. he displays a relaxed aura both towards his gang and whilst flirting and openly soliciting sex to the woman he loves. He is also able to display genuine respect for others, but also highly charismatic and intimidating by his gang and other fighters.