A beautiful woman with prodigious fighting skill. She acts as Munsu's 'Sando', or bodyguard. When she was kidnapped by a corrupt lord who wanted to make her his personal bodyguard, her lover embarked on a futile quest to become an angyō onshi. He died in the process, but not before making Munsu aware of her plight. After Munsu frees her, she decides to become his bodyguard in memory of her dead lover, and takes the title "Sando" as her new name.

Despite her fearsome natural fighting ability, Sando is quiet and shy, with a high moral stance. As a result, she is often in conflict with the amoral Munsu over his questionable methods. She has made it clear that if he ever becomes truly evil, she will no longer protect him. She also has a great fear of heights, and will refuse to cross bridges set over deep mountain gorges or valleys. Munsu finds this extremely peculiar, seeing as to how she often leaps several stories into the air during combat.

Renka is Ma Kensei’s 16-year-old daughter. She came to Japan in search of her father, who she planned to take back to China. Despite treating him with disdain at first, she soon took a strong liking to Kenichi and showed this openly. She is constantly vying with Miu for his attention. This greatly annoyed Miu, possibly even making her feel jealous, which was alleviated by Renka behaving in a catlike manner which Miu has a soft spot for. She began to acknowledge Kenichi's style of martial arts after her visit to the the dojo, and later gives him advice on developing his own fighting style.

She is Minato's fourth Sekirei and her power is water (derived from her name "umi" which means the sea). She contacted him over a dream saying that she would kill him, but when they finally met she was persuaded into becoming his Sekirei. ( ch.22-23) She says that she is Minato's legal wife. At the beginning, she wanted to be the strongest to demonstrate that Ashikabi were not necessary to win but later she confides to Miya that her only goal is to get stronger to protect and live together with her Ashikabi forever.

не по малко pain in the ass за главния герой е тя, дори бих казал, че на моменти се държи много по-ужасно от кралицата на прокълнатите ... шегувам се разбира се

Miu Furinji is a curvaceous 16-year-old girl who attends the same school as Kenichi and is currently in her second year. She is the granddaughter of Hayato Furinji and the daughter of Saiga Furinji the leaders of Ryozanpaku and Yami's One Shadow Nine Fists respectively. It is unknown how or when Miu came into Hayato's care but she has been with him since she was at least 6-years-old. It was in these early years of her life that Miu learned martial arts from her grandfather and also accompanied him on his missions to bring about peace.