Hyakuya Sect

The Hyakuya Sect, referred to as the Brotherhood of a Thousand Nights before the Apocalypse, was a religious organization said to have been the largest of all the magical syndicates in Japan. They play a prominent role in the Seraph of the End: Guren Ichinose: Catastrophe at Sixteen light novel series.

For many years, the Thousand Nights fought with the Order of the Imperial Demons to control the reins of power in the country. However, after World War II, they gained the support of the United States and ever since then, were the dominate syndicate in Japan.

The Thousand Nights had deep ties to Japan's political underbelly. Their power was far-reaching as nearly ever major politician relied on their support to stay in power. Few members of the general population knew of them, but they ruled the country from the shadows. They would stop at nothing to gain power and influence. They would even murder, kidnap, start war, and experiment on humans to get it.

The Thousand Nights ran orphanages (which were infamous for cruel experimentation on orphans) to collect children with special gifts. When they found a suitable test subject, they would kill the parents and bring the child to one of their ophanages for grueling experiments. In particular, they were interested in the "Seraph of the End."

The Thousand Nights group in Japan was believed to have been wiped out by Krul Tepes along with all of their guinea pigs who possessed the seraph gene. However, she saved the children from at least one orphanage in Shibuya and raised them in Sanguinem. Two of the children were seraphs. Additionally, a few other seraph children had survived the Apocalypse. Kureto Hīragi claims they were an even more depraved organization than the Japanese Imperial Demon Army.

Known Members

 * Saitō
 * Mahiru Hīragi

Orphans
Note: They eventually change their surnames to "Hyakuya." Yu even confesses to forgetting his original surname.
 * Yūichirō Amane
 * Mikaela Shindo
 * Akane Lida
 * Junji Haiyama (Adopted by Miyuki Yamada (Mahiru Hiragi))
 * Yuki Endo
 * Chihiro Hyakuya
 * Kōta Hyakuya
 * Ako Hyakuya
 * Fumie Hyakuya
 * Taichi Hyakuya

Trivia

 * Saito and Mahiru are the only known members of The Thousand Nights. The whereabouts of the main rulers of this organization are still unknown.