Factory Farms

The mass production of cheap meat. Where the livestock is kept in poor conditions, barely even living...just fattening for the slaughter. The Factory Farms are farms located in the demon world that mass produce cheap human meat of poor quality. As mentioned by Sonju, there are hundreds of such farms as compared to the mere number of Premium Farms, which are polar opposites of Factory Farms in terms of the quality of orphan meat they produce. Children from these farms are usually sold to demon civilians, while the high quality children from the Premium Farms are reserved for wealthy and high ranking demons. The Factory Farms were built due the "Promise" made between the Demons and the Ratri family. It is unknown exactly when the Factory Farms were built, but they have likely existed since the "Promise" was enacted 1,000 years ago.

History
1,000 years ago, the world was plagued by a war between humans and demons. In an attempt to end the war, a proposal —otherwise known as The Promise— was formed by the first head of the Ratri family and. It declared that "Human beings shan't hunt 'demons' anymore. In return, 'demons' shan't hunt humans." Afterwards, the world was broken into two — one side belonging to the demons while the other belonging to the humans. As per the agreement, as small number of humans were left behind in the Demon World to satisfy the demons need to eat humans. These humans were later kept in plantations known as Premium Farms or Factory Farms to be raised as livestock for the demons to consume. While there are hundreds of Factory Farms, which are for mass production of cheap meat for demon civilians, there are currently only four Premium Farms which produce high quality meat for wealthy and high ranking demons.

In 2047, the Factory Farms was abolished after the enactment of Emma's Promise, which declared all farms be shut down and all of the surviving humans be sent to live in the Human World.

Buildings
One of the factory farms "William Minerva" and his team raided resembles that of a normal factory. Two of "Minerva"'s teammates described how the factory farm's exterior is clean-looking, whilst the interior, specifically the room which keeps the orphans, emits a bad odor, even from a distance.

Branding
According to the archives in Shelter B06-32, the factory farms simply used brands instead of farm identifiers to mark the orphans. The brands would be engraved onto a certain part of a factory farm orphan's body, such as on the collar bone, the back of a hand, on the head or on the upper part of an arm.

Conditions at the Factory Farm
Orphans who are being kept in these Factory Farms are being kept alive through machines, like monitors, to keep their organs functioning and give them oxygen, thus the machines are vital in keeping the orphans alive. As explained by William Minerva, if any of the factory farm orphans are removed from the machines they are strapped in, they will immediately die.

The children in these farms do not learn languages, have names, have free will, and cannot think of escaping because they are kept in a comatose state their whole lives. The factory farms are also well-guarded against the Poachers who try to steal the children from the plantations.

Orphans

 * Numerous unnamed Factory Farm Orphans (Some deceased and some still alive)