Heian Era Goko Clan
Master (師匠, Shishō)
Voiced by: Masaki Terasoma (Japanese); Cory Yee (English)
The head of the Goko clan (御降家, Gokō-ke) in the Heian period and the father of Sana and Yurako. After Mao became his favorite disciple, he chose to name him as the successor to the clan. In secret, he ordered five other disciples to kill Mao to become the true successor, aiming to draw out the strongest of them. He was killed when the clan fell, supposedly by Mao himself.
Hyakka (百火)
Voiced by: Hiro Shimono (PV, anime) (Japanese); Edward M. Mendoza (English)
A fire element user who was on friendly terms with Mao when they lived at the Goko clan Manor in the Heian period. He is technically Mao's superior, having joined the Goko clan ten days before. He was the only person who was summoned to the Five-Sided Shrine that spoke up against killing Mao. However, he was led to believe that Mao had killed Sana when the clan fell and had distrusted him since. He spent much of his time as an immortal working as a carnival performer and ramen cook.
Kamon (華紋)
Voiced by: Toshiyuki Toyonaga (PV, anime) (Japanese); Brian Timothy Anderson (English)
A wood element user who occasionally joins forces with Mao when it is convenient for him. He was a member of the Goko clan in the Heian period, where he created the Seeds of Haku. Having become immortal, in the Taisho period he is known as Kuchinawa (朽縄). He wishes to investigate the fate of his late lover Masago. He has a shikigami named Beniko (紅子) who serves as his assistant.
Masago (真砂)
Voiced by: Emiri Suyama (Japanese); Cristina Vee (English)
A kind and powerful water element user who was a disciple of the Goko clan in the Heian era. Disliking violence, she often felt conflicted about her position in the clan. She was secretly Kamon's lover, but died while trying to run away from the Goko clan. Her body was captured and preserved by Shiranui, who continues to absorb her power.
Shiranui (不知火)
Voiced by: Kazuyuki Okitsu (Japanese); Landon McDonald (English)
A water element user from the Goko clan with an obsessive interest in Mao. He suffered great amounts of abuse from the clan's master due to being less skilled than his peers, coming to resent them. After becoming immortal when the Goko clan fell he continuously attacked the surviving members throughout the centuries. He runs the new Goko clan in the Taisho era with Hakubi and Yurako, where he continues to carry out assassinations for clients.
Hakubi (白眉)
Voiced by: Takuya Satō
A cunning metal element user and disciple of the Goko clan Manor. He previously fought in the Russo-Japanese War under the name Captain Shirasu (白洲), where he had an encounter with Hyakka. He holds a grudge against Hyakka for slicing off his arm and burning his face. He has an old alliance with Yurako, and they plan to resurrect the Goko clan together.
Daigo (大五)
Voiced by: Katsuyuki Konishi
An orphan and older brother figure to Mao. After leaving the orphanage where they were both raised, he recommends Mao to join the Goko clan as he did. During his time at the manor, he grew to be one of the best earth element users. He was in love with Sana and planned to escape the Goko clan with her but was killed during the succession war.
Natsuno (夏野)
Voiced by: Rie Kugimiya
A laid-back earth element user and former disciple of the Goko clan who previously worked with Daigo. At one time terminally ill, she made a pact with a clay golem that saved her life and made her immortal in exchange for finding a collection of dismembered body parts. After proving her loyalty to Mao in the Taisho era, she occasionally helps him while also training Nanoka to use earth energy with Akanemaru. The last body part she needs to find is a right hand.
Sana (紗那)
Voiced by: Risa Shimizu (Japanese); Xanthe Huynh (English)
The daughter of the Goko clan Master, Sana was betrothed to Mao when he was named the successor. She was secretly in love with Daigo, and planned on escaping the manor together before he was killed. She had a pet cat named Haimaru (灰丸), who would later turn into Byoki. She was killed when the Goko clan fell, with the survivors believing she was murdered by Mao. A woman in the Taisho era named Yurako shares her appearance.
Yurako (幽羅子)
Voiced by: Reina Ueda (Japanese); Anairis Quiñones (English)
She is originally believed to be Sana in the Taisho era, appearing identical to her. Yurako eventually reveals to Nanoka that she is Sana's twin sister. Unlike Sana who lived in the Goko Clan manor, Yurako was confined to a cave and forced to become a vessel for the curses that were directed at the clan, her body becoming filled with ayakashi. Becoming extremely bitter of her sister, she falls in love with Mao when he showed her kindness after escaping. After becoming immortal, she currently works with Shiranui and Hakubi in order to revive the Goko clan.
