The granddaughter of Enjun (Sa-Taihou), her father and mother were murdered nine years ago by her cousin, Sakujun Sa, though that fact is unknown to her. Her ability to speak was sealed by her grandmother, Eiki, when she was a child, and so she communicates primarily through writing. Because she is of the main Sa line of descent through Enjun, she is a threat to Chuushou and other branch family members during their power struggle. For her own protection, she is hidden away and watched over by Shourin and Youshun, under orders from Ensei Ro. Later, she uses her strange power to rescue Kokujun together with Shurei. When Kokujun accepts the burden of leading the Sa clan, she vows to be always by his side. (Source: Wikipedia)
He's very witty and wise. He served Lieutenant Governor to Rou Ensei when he was the Governor for the Sa Province. As the conflict rose, assassins were sent to kill both of them. As a result, Ensei set out on a journey to seek an audience with the Emperor in order to have a suited person assigned as Governor. During this time, Tei Yuushun chose to lock himself in a prison cell.
A large cat. Formerly possessed Kanachi’s older brother, but changed to Kanachi later in life, something that is unheard of. (Source: Hakkenden Wiki)
A member of the four kemonotsuki houses. She is possessed by Hibiki, the snake God. She is extremely sickly. She is a 15 year old girl with white hair and red eyes. She is friends with Hamaji.
Dagger is one of the Carnies at Noahs Ark Circus, his Circus trick is a knife Thrower, he never misses his target and uses this to fight. When Ciel joins the Circus as Smile, Dagger helps train him up. Dagger keeps a cheery mood thoughout the manga. He is closest with Joker and has a not-so-secret attraction to Beast, who makes it obvious that she prefers Joker.
Arthur is an unknown writer and a relatively inexperienced eye doctor who had served aboard a ship for some time. In 1889, he receives a letter invitation to the Phantomhive manor, at a party with numerous people of renown stature. The earl appears to be fond of one of Mr Wordsmith's published writings in a relatively obscure magazine, that being the sole reason for his invitation. Arthur's character is based on the famous writer Arthur Conan Doyle, who gave life to the now most famous detective Sherlock Holmes. He has a steadfast sense of justice and a cool, analytical mind. He has a habit of jotting down notes in the cuffs of his clothing for reference in his novels. At night, one of the guests, Lord Siemens is being found dead in his room and this starts the Phantomhive Manor Murders. Due to the rain, nobody can leave the manor and they have to cope with the situation as others of them are being murdered (that including the butler, Sebastian).In this case, Arthur will play the role of the detective, desperately trying to find the culprit, even if at first it seems impossible. Later after Siemens death and before he was found murdered, Sebastian tells him that "he leaves the young master in his hands", this somehow making Arthur feel that something was not right in that manor. At the end of the arc, just after his carriage leaves the mansion, he realizes Mr. Jeremy's true identity as Sebastian and heads back for confirmation. Sebastian and Ciel reveal the true unfolding of events and that they had framed Woodley for Earl Gray's murder. Sebastian also reveals himself as a demon in order to give Arthur the incentive and inspiration to continue his writings.