Chapter Text
Some info for those who don't know Tokyo Ghoul (taken from the tokyo ghoul wikia):
Ghouls are a carnivorous and cannibalistic species that are only able to feed on humans and other ghouls. They are as close to humans as possible: they normally display the same attributes; the same physical appearance and intelligence as a human with the main exception being their inner biology, mentality, and diet.
A ghoul can only feed on humans and other ghouls. They are unable to digest any other type of food due to a particular enzyme their bodies produce. The structure of their tongues is also different from humans', making other foods taste disgusting and uncomfortable.
If ghouls attempt to eat normal food, they will be struck by a powerful urge to vomit. When forced or forcing themselves to digest such food, their physical condition will deteriorate. While ghouls cannot eat normal food, they are, however, able to drink coffee and water.
Ghouls do not need to eat regularly like humans do. They can survive for one or two months on just one body. However, some ghouls eat merely for pleasure. When a ghoul enters an extreme state of hunger, they will suffer very painful headaches and their mental ability will be impaired, causing them to become driven by instinct alone. They will feed on any available source of human meat to end this state, even that of close friends.
Ghoul's Physical strength:
Ghouls have a high physical capability and are four to seven times stronger than the average human: They are able to send the average human flying if struck with enough force and can penetrate a human's body with their bare hands. (in my story the Tsukishima's don't like to use their strength. Only when it's necessary.)
They are also capable of jumping to heights not achievable by a regular human. Their bodies are extremely resistant to injury. For example, if a ghoul were to be stabbed with a knife, the blade would break instead, suffering a small scratch that heals almost instantly. However, higher kinetic forces, such as a fall from a great height, can and will harm them.
Ghoul's Senses:
Ghoul senses are much keener than those of humans. They can smell people or meat from afar and tell humans and ghouls apart by their scent. They also have a heightened sense of hearing that even allows some ghouls to discern individual footsteps far away.
Biology of Ghouls:
Ghouls have an Rc factor ten times higher than that of a human. If the average healthy human has about 200-500 Rc level, then the ghoul has about 1000-8000 Rc level.
They possess an organ known as the kakuhou, from which Rc cells harden and break through the skin to form the kagune.
The Ghouls Kagune and Kakugan:
The kagune is a hard, muscle-like protrusion described as their claws. It can take the form of a pair of sharp wings, tentacle-like appendages, a tail, or a drill-like object, or even be detached from the ghoul, depending on the ghoul's materials and his or her own Rc type. It is possible for a ghoul to develop another, typically armor-like kagune as part of the mutation caused by excessive cannibalism.
Ghouls also have an identifying feature known as a kakugan, an affliction manifesting in the eyes as red irises surrounded by a black sclera. A ghoul's kakugan can appear either by their own will, due to hunger, or when using their kagune.
Ghoul's Healing ability:
Ghouls have a strong regenerative ability: small wounds and fractures heal in a matter of seconds. Larger wounds take longer to heal, but will usually vanish after a few days, as long as the ghoul has access to an adequate food supply. Ghouls have been shown to regain their strength and heal wounds almost immediately after consuming a small amount of flesh, suggesting that they can quickly metabolize their food to boost their regeneration. This regenerative ability varies among individuals, with some ghouls exhibiting the ability to reattach severed body parts or regrow detached limbs. In extreme cases of regenerative ability, some powerful ghouls can even heal severe brain injuries, reattach their severed head or upper body, and regrow large sections of their bodies.
What happens when a Ghoul eats another ghoul??
Ghoul tissue is considered coarse and disgusting, but it has the merits of providing an alternative food source. Furthermore, cannibalism increases a ghoul's Rc levels to the point of mutation, increasing their kagune's overall power. Occasionally, cannibalistic ghouls gain through this mutation an armor-like kagune alongside the predatory kagune that ghouls commonly possess, turning them into kakujas.
In extremely rare cases, a ghoul whose parents possess different Rc types will inherit both from their parents. This results in a ghoul that possesses a kakuhou in more than one location and is able to use two different types of kagune, a chimera kagune.
RC cells: “liquid muscles” that can become as solid as teeth.
Kagune types used in the story:
Rinkaku: Comes from the lower back/waist area, tentacle like. High regenerative power, high striking power, RC cells bind easily. Quite brittle.
Koukaku: High density cell condensation. High body sturdiness and high speed. Weight is a bit difficult to handle.
Bikaku: Comes out from tail area, balanced, sense of stability, no standout weak points.