Hīragi Family

The Hīragi Family is the most powerful clan in Japan and are the current leaders of the Japanese Imperial Demon Army. They manage to control the JIDA through its family members, occupying all the top positions in the JIDA and are strong fighters. However, this leads to power struggles which causes discomfort among its members, particularly Guren and Shinoa. The family is noted as "scary" by many, including Mitsuba and even Shinoa, who is a Hīragi herself.

History
The Hiragi have a pedigree of 1200 years and became the top religious organization and center of Japan's magical society. Several centuries ago, the Hiragi family developed impressive spell-casting abilities and was successful enough to branch families, which have continued to serve them over the centuries. The branch families themselves have lesser families serving them. The Hiragi themselves have absolute status and privilege. With the exception of Shinoa, they all have high-ranking military positions regardless of whether they earned them or not.

Ichinose
500 years prior to the series, the Ichinose family served as the top family under the Hiragi. However, both the first and second sons of the Hiragi family fell in love with the daughter of the Ichinose family. The second son won her love. In retaliation, the first son castrated the second son and raped the Ichinose daughter, impregnating her with his child. Although he could have annihilated the Ichinose at any time, he chose to let them live on and suffer humiliation. This maltreatment continues into the Catastrophe light novels and even the Vampire Reign manga.

Members:

 * Sakae Ichinose
 * Guren Ichinose

Serving families:

 * Hanayori (see Sayuri Hanayori)
 * Iwasaki (see Shusaku Iwasaki)
 * Narumi (see Makoto Narumi)
 * Yukimi (see Shigure Yukimi)

Nii
The Hiragi brand them as traitors in Guren Ichinose: Catastrophe at Sixteen volume 6.

Members:

 * Aoi Sangu
 * Mitsuba Sangu

Members:

 * Norito Goshi
 * Norito Goshi's elite younger brother

Kuki
The Hiragi brand them as traitors in Guren Ichinose: Catastrophe at Sixteen volume 6.

Trivia

 * Hīragi (柊) means "holly."
 * Each Hiragi family member carries around a family crest, which grants them access to restricted military facilities.
 * The branch family names include Kanji one through ten in their names.