Hachirō Kōga 「
甲賀八郎 Kōga Hachirō」 is the heir to and the de jure leader of the Kōga. He is the older twin brother of Hibi
- Dojutsu: Inherited his father's dōjutsu, which turns enemies animosity towards themselves and results in them killing themselves or their comrades.
- Kenjutsu: Other than his mystic eyes, Hachirō takes up the Katana.