Cursed Gear

Cursed Gear (鬼呪装備,) are weapons used by the Japanese Imperial Demon Army.

It is a important element in the Seraph of the End: Guren Ichinose: Catastrophe at Sixteen light novel series.

Creation
Cursed Gear is created by directly calling on Bodhisattva, black demons, or other supernatural entities and sealing them directly into sacred items using a Demon Curse (鬼呪,) so that they could serve the wielder.

The items used to seal demons are almost exclusively weapons: swords, axes, and even bows.

The weapons need to be consecrated and purified - a process that takes years before a demon can be trapped inside.

These weapons are so powerful that they revolutionized the world and forced traditional magics to fall into disuse. It can increase a normal person's standard ability by seven fold. The top rank of Cursed Gear is the Black Demon Series, and anyone bearing one of them is capable of killing multiple vampires armed with second-class weapons. With lesser Cursed Gear series, the bearer can have an even one-on-one match against a vampire armed with a second-class weapon.

Enchanted Gear
Mass-produced cursed gear, which Yūichirō Hyakuya uses in chapter 2, is a much weaker form of Cursed Gear. Usually a Yaksha or Myo-o class weapon. These can increase a regular human's strength by 3-4 times. Seven humans with these weapons should be able to kill one unarmed vampire, but an entire unit of them would have a difficult time against even one vampire with a second-class weapon.

Manifestation
This type of Cursed Gear has the convenient ability to remain in a smaller, more portable size or manifest into the full-sized weapon at will. These weapons may have the power to cast blessings or curses.

Possession
This type of Cursed Gear cannot change into a portable size or manifest as the demon's malice is too strong and s ferocious and refuses to submit so easily.

They are more well-balanced for offense and defense than manifestation-types because activating the demons particular capabilities does not leave the host vulnerable. The demons increase the physical strength and power of their user. They are typically limited to close-range combat for melee fighting.

Black Demon Series / Bodhisattva
The strongest Cursed Gear because they contain first rank demons. There are very few people capable of wielding a Black Demon weapon, and anyone capable of doing so has been experimented on previously. Anyone bearing this rank of weapon can easily kill multiple vampires armed with second-class weapons.

The death rate of those who challenge Black Demons is exceedingly high compared to other Demon Weapons. Only those with strong willpower and resolution are able to challenge them.

Wisdom Kings
Cursed Gear from the Wisdom Kings Series and above are used by the Vampire Extermination Unit.