Kyuujuu Amagiri (天霧九寿)
A demon working under Kazama's orders. He claims in episode 7 that he and Kazama are repaying their debts to Satsuma clan. Source: episode 7 of Hakuouki TV series
Animeography
Hakuouki
Hakuouki: Hekketsuroku
Hakuouki: Hekketsuroku - Kyoto Kaisouroku
Hakuouki: Sekkaroku
Hakuouki OVA
Hakuouki Movie 1: Kyoto Ranbu
Hakuouki Movie 2: Shikon Soukyuu
Hakuouki: Otogisoushi
Hakuouki OVA (2021)