Hina

Hina (ヒナ), also known as the Red Princess (赤姫 Akahime) from the Royal Oni Clan, is the cousin of Kanna and Rena. Ever since they were young, Kanna and Rena would bully Hina, who withstood everything in hopes that they would be friends. It was Hina's dream to become a Sage. She studied hard for ten years for the chance to take the Sage Test, only to find out it was cancelled because Kanna and Rena had begun the Banriko Heart challenge. Furious, Hina plotted against her cousins. She persuaded Shoko to bring Setsuna to an isolated location. When Setsuna called forth Kanna and Rena, they were all stuck in a trap. Shoko, realizing that Hina means harm to Setsuna, broke the source of the trap. Ironically, the Brand of Dominion meant for her cousins was placed on Hina, naming Shoko as her master. In order for Hina to survive, she must drink a bit of Shoko's blood every day. As a result, Hina was forced to move in with Shoko and work as a maid.

Through the use of her long smoking pipe, Hina is able to summon Smoke Familiars which resemble large stuffed animals. She also enjoys making potions and has a good knowledge of medicine and herbs. Hina originally had a bad opinion of Setsuna; however, after finding out that he lied to Shoko about his circumstances in order to not worry her, she began to realize he was a lot stronger than she gave him credit for.