Special Children

Special Children refers to the children to whom the Seven Sisters fed demonic blood when they were babies, causing them to develop the hereditary demonic powers of the 72 Pillar Clans. They were created to have their souls harvest and used as fuel to create a rift in the Ouroboros Barrier and release the Archdaemon from the Abrahamic Underworld.

Following the Sisters' deaths and the Hunger Games permanently ended, no more Special Children will ever be created again, making the 65th Generation the last Special Children in existence.

Summary
No one truly knows when did the Special Children were first created, though based on how a new generation of Special Children was created every 6 years and there have been 65 generations of Special Children, it can be assumed that the tradition first started in the 1620s.

This tradition was created by the Seven Sisters of Istehar - the Devil handmaidens of Lilith - as parts of an ancient ritual to create a rift in the Ouroboros Barrier, allowing the Archdaemon to re-enter the lower worlds once more. This ritual is known as the Tree of Qliphoth and was performed at Lake Avernus, and it was prophesied that it would require a total of 66 continuous rituals to successfully create the rift.

To do so, the Sisters broke into the houses of those with newly-born children in secrecy and fed demonic blood to these babies non-stop until they showed the first signs of puberty. Every generation, there would be a total of 72 Special Children, each correspond with a Devil Clan from the 72 Pillars.

As these children grew up, their demonic powers would begin to manifest until the hereditary demonic powers of the Goetic Clans started to appear, often with great tragedies followed soon after.

When all the Children reached 18 years old, they would then be sent to the Valley of the End to participate in the Hunger Games, in which they would fight each other to the death until only one Child remained. The child, who would comsume the souls of those they had defeated, would then be killed by the Seven Sisters to fuel the energy required by the Tree of Qliphoth.

Characteristics
Special Children are no different from regular humans in appearance, as their demonic traits are all dormant like their blood, and thus unless their demonic powers required physical changes in their body, they will appear as normal humans for their entire entire.

When they first reach puberty, their demonic powers will begin to manifest and are unique to each individual. Each Special Child have a demonic power that is hereditary to one of the 72 Goetic Clans. In addition, they are shown to have several traits and abilities like that of the Cardinal Demons.

Whenever they use their demonic powers, a demonic aura will enshroud them and give them a signature aura similar to that of a High-class Devil.

65th Generation
This is a list of the Special Children of the 65th Generation. However, this only recorded those who are named and doesn't have unnamed characters, so possibility of more Special Children escaping and survived unnoticed is quite high.

Trivia

 * The concept of Special Children are based on the group of the same name from Supernatural.
 * The 3rd, 6th, 12th, and 65th generations all have irregular numbers of children, i.e above 72 in number.
 * This was caused by twins or triplets developing demonic powers from the same clan.