Japanese Imperial Demon Army

The Japanese Imperial Demon Army (日本帝鬼軍,) is a military group with the task of dealing with supernatural tasks in Japan. It is lead by General Tenri Hīragi and comprised of many elite units. After the apocalypse, the JIDA comes into great power and establishes human cities in Shibuya and Shinjuku. They wage war against the vampires.

Their weapons include mass-produced Enchanted Gear, Cursed Gear, drugging up, spellcraft, and angels.

History
The Japanese Imperial Demon Army was formed in response to the decline of human population and the threat of demons and vampires. Though there are also other magical organizations around the world, it is the JIDA that stands out as the most effective human organization that can survive and fend off vampires and demons.

Duty
After the outbreak of the Apocalypse Virus, the human population fell by 90%. It killed off anyone 13 or older, who did not receive the vaccine. Strange monsters referred to as the Four Horsemen of John appeared and began killing off the remaining humans. In response, vampires came into the open and saved as many humans as they could as human livestock out of concern for their drastically diminished food supply.

However, mankind would not give up so easily. Rebirth was coming. And to lead that rebirth would be the Japanese Imperial Demon Army. Their goal is to rally together all human survivors, and snatch back supremacy.

Child Policy
To increase their numbers, the JIDA encourage all soldiers and citizens to procreate and fight for hegemony. However, they have strict population regulations and may not allow humans from the outside world enter their gates. This contradictory attitude suggests that their goal in promoting procreation among their soldiers may actually be to give them something to fight for.

They also experiment on their human population; the entire school that appears in chapter 2 is actually an experiment with demon resistance, which either turns its subjects into feasible soldiers or else makes them go mad. It is not unusual for their test subjects to die or be killed by the testing circumstances.

Structure

 * Shibuya Main Army
 * Vampire Extermination Unit
 * Moon Demon Company
 * Infantry

Uniform
The standard JIDA Uniform consists of a long-sleeved double-breasted black coat with two rows of gold buttons on the front and light green details including the shoulder epaulettes. Some JIDA members wear either one or two Sam Browne belts which pass diagonally over either shoulder. All members of the JIDA wear a pair of white parade gloves and white web belts with a gold waist-plate. All male members wear the standard uniform trousers. Most female members wear the standard uniform skirt, though some choose to forgo the skirt in favor of the uniform trousers. Most members wear a pair black boots that go over the leggings or socks though some wear black shoes instead. There are variations of the uniform that include things such as tailcoats, fourragères, and armbands.

Some members wear a black cape with the same light green details and lining as the jackets. Some also wear a kepi-style cap with light green and gold details as well.

The upper ranks (typically worn by the Hīragi and their branch family members) wear a similar uniform but with red and gold details instead the usual light green and gold. These uniforms also seem to include aiguillettes and various decorations such as crescent moons or a six-pointed star. The lead general, Tenri Hīragi, wears a unique variation of the uniform that includes a maroon military overcoat with shoulder epaulettes which have a gold bullion fringe along with an aiguillette on his left shoulder.

Trivia

 * According to the vampires, the JIDA have been conducting experiments on the Seraph of the End.
 * Promotions in rank in the JIDA are often due to family status rather than success in battle or qualifications.
 * There are a lot of different factions in the JIDA (e.g. guards for the city Yūichirō is from, an Intelligence Force, teachers for leading classes on using Demon Weapons) and therefore a large range of roles one can be assigned to.