Shikibe Ibuki

Shikibe Ibuki (式部 為吹) is Takashiro's talented secretary. Part of her job includes acting as a chaffeur for Takashiro and escorting him whenever she is needed by him.

Background
As revealed later on in the series, Ibuki (alongside Tsubaki) is the aunt of Yuki from his mother's side, Mizuki. As the Shibike family is part of the Giou Clan, she knows the existence of the Duras and the ongoing battle the clan has had with Reiga.

Personality
True to her job as secretary, Ibuki is calm and composed in carrying out Takashiro's orders dutifully. She displays deep and unwavering loyalty to Takashiro, respectfully calling him with the honorific '-sama' and using polite (keigo) way of speaking with him and this is extended towards the other people she interacts with. She is always quick to obey the orders given to her by Takashiro, especially when given urgently, and maintains a professional aura all the time. Her personality contrasts greatly with her younger sister, Tsubaki Shikibe, who is more hot-headed and expresse her emotions greatly.

Relationships
As part of the Giou Clan, she has multiple interactions with characters in the series, the most notable one being with Takashiro Giou.

Takashiro Giou
Tsubaki is extremely loyal to Takashiro and in turn, he trusts and relies on her to the point that he hired her as his personal secretary. Her duties include escorting him around, brewing him tea and is constantly on a lookout for his health. When Takashiro asked her if she has ever lied before, she replied: "Yes of course, I have lied so many times to people other than you, Takashiro-sama." To which Takashiro returned with a suprise expression and smiling warmly that her answer was perfect.

Shikibe Tsubaki
After Takashiro decided to reveal part of the truth of Yuki's birth to him, Tsubaki and Ibuki were seen together waiting anxiously in the main residence in Kamakura, worried about Yuki's reaction. They both explained that it was hard to keep the truth from him as his aunts, as ordered by Takashiro, but in reality wanted to let him know that he had close relatives form his mother's side in the family. Ibuki and Tsubaki held a worried expression when Yuki told them of his resolve to fight the Duras and end the war with Reiga in his current life.

Giou (Sakurai) Yuki
Ibuki is Yuki's aunt from his mother's side.