A character introduced in Kyokugen Dasshutsu: 9 Jikan 9 Nin 9 No Tobira. Known as "Ace" in English.
He is an older man with greying Brown Hair and a Beard. Wears a black, long-sleeved Turtleneck Shirt, Black Pants, Black Boots, a Blue Belt, and a grey Trench Coat.
His true identity is Hongou Gentarou, one of four masterminds behind the First Nonary Game, alongside Kubota Teruaki, Musashido Kagechika, and Nijisaki Nagisa.