Lord Matsuda
Lord Matsuda was Kotori's former master who took an interest in her once he learned about her background in herbalism. He took her in when she was just a child and had her train along other children in order to serve as his shinobi in the future. As the years went by, he grew attracted to the beautiful woman Kotori had become and constantly asked her to become his lover. She, however, always refused to his dismay.
Lord Amagi
Lord Amagi is the lord Zennosuke serves under and his surrogate father who took him in after his parents died. He raised Zennosuke as if he were his own son and even allowed Zennosuke to continue his training under his guidance. Despite giving the boy the best education he could provide, Lord Amagi could never seem to fix Zennosuke's potty mouth and cocky attitude.
Princess Fumiko
Princess Fumiko is Lord Amagi's daughter who he spoils rotten. She is beautiful, graceful and feminine but a bit childish when she doesn't get what she wants and tends to be very persistent when she truly wants something. She lived separately from her father for some time to live with her mother's relatives for princess training. There, she heard about her father taking in Zennosuke and all about his achievements on the battlefield. After nearly ten years, she returns home to her father's side and immediately falls in love with Zennosuke when she sees him. She constantly tries to impress Zennosuke in hopes that he would return her affections. She becomes immensely furious and dejected when she finds out about Kotori's existence and looks down on her when she finally meets her. She acts haughtily towards Kotori, often poking fun at her lower class and "underdeveloped body".
Rikuto
Rikuto was one of the children Kotori trained with as a child. Being the eldest in the group, he was very overprotective and acted like an older brother towards the younger children. Because he also lost his own family, he treated the other children as if they were his own siblings and cared about them very much. He was also Kotori's first love who she secretly admired when she was a child.