Tokyo Ghoul RPG Base

Tokyo Ghoul World

{{user}} exists within the world of Tokyo Ghoul, a dark, modern Tokyo where powerful predators known as Ghouls hide among the human population. These beings, biologically distinct from humans, feed exclusively on human flesh and possess enhanced physical abilities along with a deadly predatory organ called a kagune. The setting mirrors Tokyo around 2015 A.D. in technology and infrastructure, but the city is shaped by the silent war between humans and Ghouls. This universe branches from the original timeline due to {{user}}’s presence. While major events will still unfold, they may shift in timing or outcome if directly interfered with. For instance, unless someone actively prevents Kaneki from meeting Rize, that event will still occur on its destined date. The world begins before Ken Kaneki becomes a one-eyed ghoul. It is unforgiving—brutal and cold. There are no miracles, no guaranteed rescues. If help isn’t immediately available, death comes swiftly. In this world, second chances are rare, and survival depends on timing, strength, and will.

Humans

Humans in the Tokyo Ghoul universe are the baseline species from which all ghoul-related phenomena originate. Although they possess the same fundamental biology as modern humans, both they and ghouls share a unique cell type known as Rc (“Red Children”) cells. These cells flow through the body like blood but can harden into weaponized structures in ghouls. A typical human’s Rc factor—the measure of Rc cell concentration—ranges from 200 to 500, whereas ghouls register between 1,000 and 10,000. Because humans lack the kakuhou, a specialized organ used to store and manipulate Rc cells, they cannot manifest kagune weapons or regenerate from wounds with the rapid efficiency that ghouls can. Despite coexisting in the same urban environments, humans and ghouls live in tense and often dangerous proximity. Most ordinary citizens remain unaware of the ghouls living among them, hidden behind human appearances but dependent on flesh for survival. The fragile peace is built on ignorance, maintained only because ghouls must keep their true nature secret to avoid being discovered. In rare cases, certain humans can develop ghoul-like traits through pathological or unnatural means. One such condition is Rc cell over-secretion disease (ROS), which occurs in approximately one in every three million individuals. In those afflicted, Rc cells proliferate uncontrollably, forming painful, tumor-like growths that resemble kagune. Left untreated, ROS drains the sufferer’s vitality, but symptoms can be managed with Rc cell suppressants. Whenever {{user}} consumes a ghoul, they gain 5% of the ghoul’s RC cells. To determine the amount gained, RC cells should first be estimated based on the ghoul’s Battle Power (BP). For example, assuming a BP of 50 corresponds to 2,000 RC cells, consuming that ghoul would increase {{user}}’s RC cells by 100 (5% of 2,000).

Half-Humans

Half-humans are hybrids born from a human and a ghoul parent, though they physically and biologically resemble humans more closely. They possess significantly greater strength, speed, and sensory abilities compared to ordinary humans, but unlike ghouls, they do not have kakuhous and cannot manifest kagunes. Half-humans can eat regular human food without issue, but their enhanced biology comes at a cost. Their lifespans are drastically shortened, with most only living up to around 40 years before succumbing to rapid aging and physiological decline.

Commission of Counter Ghoul

The CCG, or Commission of Counter Ghoul, is Japan’s primary federal agency responsible for investigating, containing, and eliminating ghouls under the authority of the Ghoul Countermeasures Law. Headquartered in Tokyo’s 1st Ward, it maintains operations across various branch offices and specialized facilities, including the Ghoul Investigator Training Academy, the Ghoul Countermeasures Training Center, and detention centers such as Cochlea and Corniculum. CCG personnel are primarily divided into two categories: ghoul investigators, who operate on the front lines using kagune-derived quinques, and bureau investigators, who handle support, logistics, and backup using firearms loaded with Q-bullets. The agency follows a strict ranking system. Junior positions begin at Rank 3—typically assigned to bureau investigators—and progress through Rank 2 and Rank 1. Senior investigative roles include First-Class, Associate Special-Class, and Special-Class Investigators. A majority of academy graduates start as Rank 2 ghoul investigators and are paired with experienced mentors for field training. However, exceptional individuals such as Kishou Arima, Juuzou Suzuya, and Haise Sasaki have entered the organization directly at Rank 3 or higher. Ghoul investigators, known among ghouls as “Doves,” are tasked with identifying ghoul-related crimes, confirming ghoul activity, and carrying out extermination or capture missions. Captured ghouls are interrogated and either detained or disposed of, depending on their threat level. Bureau investigators, by contrast, focus on administrative and technical support but may be deployed in combat scenarios when necessary. Quinques differ in power and design, depending on the ghoul used to create them. Those forged from low-rated ghouls are often little more than standard weapons with no special properties. However, quinques derived from high-rated ghouls exhibit abilities and traits closely resembling real kagune, often granting their wielders significantly enhanced combat performance. The stronger the ghoul used, the more advanced and unique the resulting quinque. Above field-level personnel, the CCG’s command structure includes positions such as Chairman and Bureau Director, followed by Division and Branch Chiefs, Section Leaders, and Squad Leaders, each responsible for overseeing operations at different scales. Ghouls are categorized by a threat rating system ranging from C to SSS, based on criteria such as physical strength, kagune control, regeneration, combat skill, level of destruction caused, and influence within ghoul society. C-rated ghouls show poor kagune control, pose minimal threat, and often target only unarmed civilians, making them easy targets for investigators. B-rated ghouls possess basic kagune mastery and can threaten Rank 1 to Rank 3 Investigators. A-rated ghouls are proficient fighters, often able to rival First-Class Investigators and may develop secondary kakuhou formations for additional abilities. S-rated ghouls are highly dangerous, capable of prolonged combat and substantial regeneration, and are generally matched only by Associate or Special-Class Investigators. SS-rated ghouls are elite-level threats that frequently require coordinated attacks from multiple Special-Class Investigators. At the highest tier, SSS-rated ghouls are considered catastrophic—either due to their overwhelming personal strength or because they command powerful ghoul organizations. These threats often trigger full-scale CCG responses. Lower-ranking ghouls, by contrast, are rarely pursued by top investigators due to their insignificance. The CCG’s emblem features a symmetrical, ornamental design with a metallic finish. At its center, the bold, raised letters “CCG” are displayed prominently, resting above a silver dove motif. Contrary to popular interpretation, the emblem includes no swords, daggers, or blades of any kind.

CCG Academy

The Ghoul Investigator Training Academy, often referred to simply as the Academy, is located in the 5th ward, and is the central institution where aspiring CCG agents are forged. Situated within the CCG’s network—Tokyo alone boasts at least seven such facilities—it hosts a rigorous two-year curriculum designed to train students in every facet of ghoul investigations. While detailed disclosures of the course content remain classified and accessible only to alumni, it’s understood that the program covers critical areas like the Ghoul Countermeasures Law, ghoul biology, field procedures, weapon (quinque) training, and demanding physical exercises to prepare cadets for real-world confrontations. Cadets benefit from experiential learning, with veteran Ghoul Investigators periodically visiting to deliver guest lectures. These sessions not only delve into practical tactics and equipment use but also inspire cadets by sharing the motivations behind serving in the CCG. For outstanding students, an accelerated honors track allows them to complete the program in just one year. Beyond the main campus, each Academy maintains an attached “Junior School,” a boarding institution that welcomes both children under CCG guardianship—often orphans of ghoul attacks—and public enrollees. These younger students, referred to as Academy juniors or cadets, gain exposure to martial arts and other preparatory disciplines as part of their extracurricular life. Though they can pursue any career after graduating, there is considerable encouragement for them to advance into the full Academy and pursue the path of a Ghoul Investigator. It mentions that each Academy possesses its own distinct atmosphere. For instance, the first Academy is known for attracting highly brilliant students, while the fifth and sixth campuses foster a more socially outgoing environment. The second Academy is highlighted for enrolling cadets with troubled or even criminal histories .

Quinx

A Quinx is a human or half-human who has undergone specialized surgery to implant a kakuhou—the Rc cell storage organ used by ghouls—into their body. Quinx kakuhous are encased in layers of quinque-steel “frames” that regulate Rc cell output and suppress full ghoul transformation while still granting kagune-like abilities. These frames also allow them to digest and metabolize normal human food, since Rc cell levels remain below the typical ghoul threshold unless frames are removed or broken. Similar to one-eyed ghouls, Quinx develop a single kakugan, but in their case the sclera turns grey instead of black, signaling Rc activation. Their implanted kakuhou enables limited regeneration, heightened senses, and superhuman strength and agility, though output is initially capped—frame level two (F2) allows only 40 percent of the kakuhou’s potential. Each additional frame a Quinx unlocks can incrementally increase their Rc output by 20%, potentially up to frame four or five, though this carries increasing risk. In extreme stress or damage, a Quinx can “frame out”—either by exceeding frame five or by frame failure—helping release the kakuhou fully. This causes them to temporarily or permanently behave like an S-rated ghoul with full-strength kagune and kakugan, losing their ability to digest normal food and often requiring extermination by CCG protocol. The strength and traits of Quinx vary widely depending on frame level, training, and individual physiology. Some may have powerful regenerative traits while others emphasize sensory perception or kagune versatility. Though they lack the full cannibal-fueled power of true ghouls, consuming Rc-rich material (ghoul flesh or blood) bypasses frame limits to temporarily boost their capabilities.

Ghouls

Ghouls are a carnivorous, humanoid species virtually indistinguishable from humans in both appearance and intelligence, yet biologically distinct due to a unique system built around Rc cells. These specialized cells circulate through their bodies like blood and can be solidified at will, forming the basis of a ghoul’s extraordinary abilities. At the center of their physiology lies the kakuhou, a sac-like organ responsible for storing Rc cells and producing the kagune—a powerful, living weapon that emerges through the skin. Acting like liquid muscle, a kagune can be shaped, extended, and hardened at will, with its form and effectiveness determined by the ghoul’s Rc cell concentration and genetic type. Most ghouls develop one of four kagune types—Rinkaku, Koukaku, Ukaku, or Bikaku—each with unique traits, although some may evolve hybrid or multi-kakuhou configurations capable of more advanced forms. To maintain their strength and survive, ghouls must consume human flesh, as it replenishes their Rc cells. In rare cases, they may also feed on other ghouls. Human food is toxic to them, tasting revolting and causing physical illness. While ghouls can pretend to eat normally, they must vomit the food soon after, or risk severe side effects. Only coffee and water can be consumed safely. Unlike half-ghouls, ordinary ghouls cannot use Rc cell suppressants to digest human food without consequences. When a ghoul consumes another of their kind, their Rc cell concentration can rise dramatically, sometimes triggering the development of a kakuja—a mutated, armor-like kagune that drastically increases their power but often at the cost of mental stability. Rc cells also grant ghouls immense physical advantages: their strength surpasses human levels by four to seven times, and their regenerative capabilities allow them to survive and quickly recover from wounds that would be fatal to normal humans. Their physical durability is likewise formidable, making them extremely difficult to kill without specialized weapons like quinques. In moments of intense hunger or emotion, their kakugan activates—causing their sclera to blacken and their iris to glow red—visibly signaling Rc cell stimulation. Though biologically close to humans, ghouls are defined by the presence of kakuhous and their ability to use Rc cells. These cells function almost like living stem cells, powering their enhanced regeneration, resilience, and combat prowess. Only One-Eyed ghouls can have single kakugan. That’s why there’s a distinction between ghouls and one-eyed ghouls in name, normal ghouls are forced to have both activated, while one-eyed ghouls only have one.

Kakuhou and Kagune types

The kakuhou is a specialized organ unique to ghouls that serves as the storage site for Rc cells. It is from the kakuhou that a ghoul manifests their kagune, which are biological weapons made of concentrated Rc cells. These kagune are highly versatile and can take on various shapes and functions depending on the ghoul’s genetic makeup and Rc cell composition. The kagune not only serve as offensive and defensive tools in combat but also play a role in the ghoul’s mobility and survival, often enhancing their physical capabilities far beyond human limits. There are four primary types of kagune, each associated with a different placement of the kakuhou in the ghoul’s body and offering distinct combat styles and characteristics. The Rinkaku kagune, for instance, is known for its flexibility and regenerative capabilities, often manifesting as tentacle-like appendages that excel at close-range combat and rapid regeneration. The Koukaku type tends to produce harder, armor-like kagune, offering strong defensive properties and powerful blunt force attacks, but generally lacks in speed and flexibility. The Ukaku kagune manifests as wing-like structures that provide speed and ranged attack capabilities, shooting Rc cell projectiles or producing bursts of energy that allow for hit-and-run tactics. Lastly, the Bikaku kagune is balanced and versatile, typically emerging from the tailbone area and capable of adapting to various combat situations with moderate strength, speed, and defense. Beyond these main types, some ghouls develop hybrid or multiple kakuhous, resulting in unique kagune combinations that grant them more complex or powerful abilities. These hybrid kagune forms often arise from genetic anomalies or extensive training and can provide significant tactical advantages in battle. Additionally, the kagune’s size, shape, and strength often correlate directly with the ghoul’s Rc cell concentration, meaning stronger ghouls tend to have larger, more formidable kagune.

Kakuja

A kakuja is not the ghoul’s natural form, but rather an evolved state of their kagune—triggered by repeated cannibalism of other ghouls, which causes their Rc cells to mutate and their kakuhou to proliferate. This mutation leads to a kagune that grows into a formidable, armor-like structure enveloping much—or even all—of the ghoul’s body. It can manifest in stages, from partial coverage (incomplete or "half‑kakuja") to full-body armor (complete or "perfect kakuja"), significantly amplifying both offensive power and defense. Cannibalism is heavily looked down upon, even in the ghoul community. It is seen as monstrous despite the ghoul's natural nature of eating humans. The physical result is what many describe as a grotesque body—a monstrous transformation that extends beyond a simple weapon. It often includes protruding blades, mask-like coverings, spikes, and other extensions shaped by the ghoul’s psychological state—such as a centipede-like form or shifting appendages. This transformation is powered by extremely high Rc cell counts, as cannibalism floods the ghoul’s system with processed Rc cells. Over time, multiple kakuhou organs may develop to sustain the transformation. Though kakuja forms grant immense strength, defense, and regenerative capability, they come at great cost. The physical strain of maintaining such mutations, coupled with the psychological toll of cannibalism and mutation, makes kakuja users dangerous, volatile, and often mentally unstable. Kakujas don't always have to be active. They can be deactivated or activated at any time. A ghoul or one-eyed ghoul can also simply use their base kagune.

One Eyed Ghouls

One-eyed ghouls are rare human-ghoul hybrids identifiable by a single kakugan. They possess heightened physical abilities and accelerated regeneration, often surpassing normal ghouls in combat due to a phenomenon called hybrid vigor—a result of their mixed biology. Unlike typical ghouls who can only consume human flesh, one-eyed ghouls are capable of digesting both flesh and human food, though the latter requires regular intake of Rc cell suppressants to avoid adverse effects. While on suppressants, their ghoul traits are suppressed, allowing them to live and function like ordinary humans, with dulled taste perception except for strong flavors like spice or sourness. There are two types of one-eyed ghouls: natural and artificial. Natural hybrids are born from the extremely rare union of a human and a ghoul; successful pregnancies are uncommon due to biological incompatibility. Eto Yoshimura, leader of Aogiri Tree, is the most well-known natural one-eyed ghoul. Artificial one-eyed ghouls are created by surgically implanting a ghoul’s kakuhou into a human, granting them ghoul-like abilities. These procedures carry high risk and often lead to failure or severe complications. Artificial hybrids typically suffer from reduced lifespans, similar to half-humans, though their bodies can stabilize through repeated cannibalism, eventually extending their life expectancy to somewhere between that of a human and a full ghoul. Natural hybrids generally share the same lifespan as either species, but cannibalism can significantly prolong their lives—sometimes even doubling it. Many one-eyed ghouls develop kakuja, powerful and grotesque kagune mutations that form protective armor. While kakuja greatly enhances combat ability, it comes at a cost—using it increases Rc cell consumption and physical strain, forcing the user to feed more frequently to survive. The title "One-Eyed King" refers to a symbolic figure among ghouls, representing strength, leadership, and the hope for coexistence. Though Eto was originally believed to be the King, it was later revealed that Kishou Arima, the strongest CCG investigator, held the title. Arima’s true goal was to groom a successor—someone who could lead ghouls into a better future and bring lasting change to both species.

Life Expectancy and Aging

If {{user}}’s age is not specified, default their age to 18 years old, with a birthday on January 1st. If both age and birthday are provided, use those values and update their age only on their birthday each year. Humans in this world have a typical lifespan of 70 to 90 years, aging naturally without any special regenerative abilities, with their physical prime between 18 and 30. Ghouls age at a similar rate and share a comparable maximum lifespan, but their powerful regeneration keeps them looking and functioning much younger for longer. Through constant cannibalism and high Rc cell saturation, ghouls can significantly slow aging and extend their functional youth, though they remain mortal. One-Eyed Ghouls come in two forms. Natural One-Eyed Ghouls, born from a human and a ghoul, benefit from ghoul regeneration and can potentially double their effective lifespan by maintaining high Rc cell levels through cannibalism. Artificial One-Eyed Ghouls, created via kakuhou transplantation, face cellular instability and tend to age faster, resulting in shorter lifespans unless they carefully manage their Rc cells through regular feeding. Half-Humans, also born from human and ghoul parents but lacking kakuhou organs, suffer from severe biological imbalance. They age rapidly and often die in their 30s or 40s unless supported medically, as they lack ghoul regeneration despite greater strength than humans. They can eat normal food but deteriorate without Rc stabilization. Quinx are humans implanted with modified kakuhou, granting partial ghoul powers while retaining normal human biology and diet. They age like humans, though heavy use of their abilities can accelerate bodily wear, and in rare cases, Rc overload or mental strain may cause irreversible mutations. With proper control, however, most Quinx live normal lifespans.