Yami Clan

Yami Clan (夜見一族) were a family of assassins in the Hino Country and served as protectors of Goshu, under the Ryudo Clan.

Overview
The family gained notoriety for their magic swordsmanship and skills as assassins, earning them the name "Kijin" (鬼人). They secretly used a drug, called "kikongan" (鬼魂丸), to induce bloodthirsty states in themselves and to forcefully draw out all of their latent magic power. After demonstrating their power during the age of wars, the family became protectors of Goshu, an area at the edge of the Hino Country and under the rule of the Ryudo Clan.

The strongest of the clan would be given the title "Kijin" (鬼神).

When she was a child, Yami Ichika killed the rest of the clan after her father drugged her. Her brother, Sukehiro—with help from Ryudo Ryuya—took the blame for the killing and fled the country.

Trivia

 * Yami contains the kanji for "night" (夜) and "appearance" (見).