Kei Nagai

==Summary==
Kei Nagai (永井 圭, Nagai Kei) is an Ajin and the main protagonist of the series.
==Powers and Stats==
Tier: | , with Hysterical Strength
Name: Kei Nagai
Origin: Ajin
Gender: Male
Age: 17
Classification: Ajin
Powers and Abilities: 
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|-|Ajin Abilities=
*Genius Intelligence
*Immortality and Regeneration (Type 2 and 3 - Mid-High - Ajin's are immortal entities which can't dieAjin: Demi Human: Chapter 1: Page 9 through "war, accidents, sickness or suicide"Ajin: Demi Human: Chapter 1: Page 11. Capable of regenerating from all types of wounds, ranging from relatively "minor" wounds such as having their arms ripped offAjin: Demi Human: Chapter 1: Page 21 or having their entire lower half reduced to fleshy mushAjin: Demi Human: Chapter 1: Page 22. To more "severe" wounds, such as having their entire body crushed by hydrophilic pressersAjin: Demi Human: Chapter 2: Page 1, singular body parts like handsAjin: Demi Human: Chapter 35: Page 36-37 or armsAjin: Demi Human: Chapter 60: Page 23, or even being reduced to dust by explosivesAjin: Demi Human: Chapter 60: Page 17)
*Enhanced Senses (Neutral Vision - Ajin's are capable of visualizing IBM's through the IBM particles present within their body being refracted upon by "IBM rays" passively generated by IBM'sAjin: Demi Human: Chapter 34: Page 6)
*Aura (Materialization - Ajin's are capable of exerting IBM particles from their body in a shadowy auraAjin: Demi Human: Chapter 34: Page 7)
*Creation and Duplication (Ajin's can construct IBM's through exertingAjin: Demi Human: Chapter 72: Page 21 and manipulating the IBM particles present in their bodyAjin: Demi Human: Chapter 26: Page 16, while usually only constructing one IMB at a time, Ajin's can construct multiple IBM's if they so desiredAjin: Demi Human: Chapter 26: Page 14)
*Matter Manipulation and Radiation Manipulation (Sub-Atomic - IBM particles share similarities with radioactive isotopes, with them being capable of generating radiation, undergoing radioactive decay after and even producing "IMB rays", which are similar in function to gamma radiation, even being capable of refracting off of other isotopic particlesAjin: Demi Human: Chapter 34: Page 6. With this level of control, Ajin's are able to create constructs made entirely from IBM particles, and regenerate from varying levels of damageAjin: Demi Human: Chapter 75: Page 27)
*Hive Mind (Type 2 - Ajin can communicate with and command their IMB's through the use of special electromagnetic waves, similar to those generated by radioactive isotopesAjin: Demi Human: Chapter 18: Page 24. Ajin can even link their vision with their IBM, allowing to see what their IBM sees, and vice versaAjin: Demi Human: Chapter 5: Page 5)
*Sound Manipulation, Breath Attack and Paralysis Inducement (Ajin can release a "peculiar voice" which induces paralysis on those who hear it through an instanceAjin: Demi Human: Chapter 2: Page 25 of "tonic immobility", which causes muscle tension to change, rendering the affect targets immobileAjin: Demi Human: Chapter 5: Page 19)
*Corrosion Inducement and Limited Blood Manipulation (Ajin's will continuously regenerate regardless of the obstacles placed between the injured woundAjin: Demi Human: Chapter 42: Page 9, breaking the material down through a unique substance that acts similar to how enzymes within one's liver breaks down alcoholAjin: Demi Human: Chapter 42: Page 11. Because of this unique substance physical objects of matter which are left inside of Ajin's, like bullets, are passively dissolvedAjin: Demi Human: Chapter 42: Page 10)
|-|IBM=
All previous abilities excluding Hive Mind, Corrosion Inducement and Blood Manipulation.
*Superhuman Physical Characteristics
*Invisibility (IBM's are constructed of an unknown matter which has perfect transmittance, making them normally invisible to the naked eyeAjin: Demi Human: Chapter 10: Page 12)
*Body Control (IBM's can manipulate and change the shape of their body, such as transforming their nails and teeth into deadly weapons)
*Limited Memory Reading (IBM's, through the clashing of heads, can send memories and thoughts of each other's Ajin to the otherAjin: Demi Human: Chapter 12: Pages 27-29)
*Passive Radiation Manipulation (IBM's, because of their composition, passively emit a unique kind of radiation called "IBM Rays")
|-|Resistances=
*Radiation Manipulation (Ajin's aren't negatively affected by the radiation generated by IBM's and the IBM particles within their body)
*Paralysis Inducement (Ajin's can resist each other's voicesAjin: Demi Human: Chapter 25: Page 15)
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Attack Potency: Human level | Human level, Street level with Hysterical Strength (IBM's, while possessing strength naturally equal to that of humans, can freely access "hysterical strength" because of lacking the natural restraint of the human mind and bodyAjin: Demi Human: Chapter 18: Page 22. Allowing them to perform superhuman feats of strength, such as crushing human skulls into complete mushAjin: Demi Human: Chapter 33: Page 5 or decapitating people with a single swipe of their clawsAjin: Demi Human: Chapter 4: Page 23 [3000 - 3900 Joules])
Speed: Average Human | Average Human, Superhuman with Hysterical Strength (IBM's, while possessing physical abilities naturally equal with that of humans, can greatly increase their speed through accessing "hysterical strength". Allowing them to perform superhuman feats of speed, such as fighting on par with SatoAjin: Demi Human: Chapter 11: Pages 16-19 who's capable of dodging point black tranquilizer darts from tranq pistolsAjin: Demi Human: Chapter 40: Page 37 which move at 50 feet per secondDartslabs: How Fast Does A Tranquilizer Dart Travel [15.24 m/s])
Lifting Strength: Average Human | Average Human, Superhuman with Hysterical Strength (IBM's, while possessing strength naturally equal with that of humans, can greatly increase their capabilities of lifting and crushing with "hysterical strength", with them capable of lifting entire people off the ground with one armAjin: Demi Human: Chapter 4: Page 20, or crushing skulls into complete mush through pure grip strength alone)
Striking Strength: Human level | Human level, Street level
Durability: Human level | Varies, from Street level to Unknown (IBM's are constructed of an unknown matter that's highly unstable, causing them to decay as soon as they're created, inherently making them more and more fragile as time passes, while at their strongest, they're completely unfazed by bulletsAjin: Demi Human: Chapter 21: Page 25 from military-grade assault riflesAjin: Demi Human: Chapter 21: Page 26, and capable of tanking multiple point blank shots from a AA12Ajin: Demi Human: Chapter 66: Page 34 [3000 - 3900 Joules]. While their weakest hasn't been shown yet)
Stamina: Superhuman (Ajin's in general have extremely high tolerance of pain, being capable of powering through a plethora of painful situations, such as having their entire lower body reduced to complete mush, having arms sawed offAjin: Demi Human: Chapter 7: Page 6-8 and suffocationAjin: Demi Human: Chapter 14: Page 40. They're even capable of powering through torture which was designed to "inflict as much pain as possible", including events like the forceful removal of teeth without the usage of novacane, for multiple days on endAjin: Demi Human: Chapter 7: Page 32)
Range: Standard Melee Range, Extended Melee Range with IBM's, Several Meters with Recover RangeAjin: Demi Human: Chapter 42: Page 8
Standard Equipment: IBM.
Intelligence: Genius (Ever since he was a kid, Kei's been described as a "fast learner" by his colleaguesAjin: Demi Human: Chapter 12: Page 5, being able to understand complex mathematical equations since he was a teenagerAjin: Demi Human: Chapter 8: Page 12. This general level of intelligence, and reactive planning has been shown a plethora of times in the seriesAjin: Demi Human: Chapter 26: Page 12, such as Kei intelligently using his Ajin regeneration to initially catch Sato, another genius, off-guardAjin: Demi Human: Chapter 11: Pages 1-10. He even targeted the back of Sato's neck to specifically sever Sato's nerve response without killing him given his general knowledge about the mechanics behind Ajin's regenerationAjin: Demi Human: Chapter 10: Page 38, with it being dependent on an Ajin dying to activeAjin: Demi Human: Chapter 9Ajin: Demi Human: Chapter 33Ajin: Demi Human: Chapter 3: Pages 34-41. Or him using the innate ability of Ajin's to visually see IMB particles against enemy Ajin's, with him filling a compact room garrisoned by non-Ajin's, that was currently being attacked by Ajin's, with IBM particles through the building's ventilation system. Obstructing the enemy Ajin's perception, and allowing the non-Ajin to sedate the enemy without suffering causalitiesAjin: Demi Human: Chapter 37: Pages 7-41. He's also shown to have general knowledge about a "thousand ways to incapacitate someone", knowing specific types and symptoms of poisons, the effects these poisons induce, the amount of time it takes for the effects to induceAjin: Demi Human: Chapter 17: Page 9, the general length of time of how long a concussion lastAjin: Demi Human: Chapter 17: Page 12, and even the specific stages, time limit and effects suffocation has on the bodyAjin: Demi Human: Chapter 17: Page 20)
Weaknesses:
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|-|Ajin Weaknesses=
Ajin's regeneration is contingent on them dying (or resetting) themselves, meaning attacks which don't instantly kill Ajin's aren't regenerated until they die or kill themselvesAjin: Demi Human: Chapter 17: Page 10. Ajin's generally can only sustain their IBM's for 10 minutes, but given Kei's higher then average IBM particle density, he's capable of sustaining his IMB for 30 minutes. Ajin's in general can only generate their IMB's once or twice a day, but given Kei's higher then average IBM particle density, he's capable of generating his IMB five to nine times a dayAjin: Demi Human: Chapter 18: Page 23Ajin: Demi Human: Chapter 18: Page 24Ajin: Demi Human: Chapter 25: Page 24Ajin: Demi Human: Chapter 25: Page 25. Sedatives (such as tranquilizers) are extremely effective against Ajin's since it indirectly bypasses their regeneration through incapacitating them, instead of killing them, which would proc the regenerative capabilities of Ajin's. Ajin's "peculiar voice" can be blocked out by noise cancelling/suppressing ear-ware such as ear plugs, it's also less effective against humans who're closer to the Ajin or who're not aware of the Ajin being a Ajin. Rain decreases the effectiveness of Ajin's control over their IBM'sAjin: Demi Human: Chapter 9: Page 2Ajin: Demi Human: Chapter 18: Page 25. Ajin's, regardless of personal choice or action, regenerate from the largest piece of their destroyed body, meaning if those pieces are sealed away, Ajin's would also be sealed away after regeneratingAjin: Demi Human: Chapter 61: Page 8-9.
|-|IBM Weaknesses=
IBM's which are duplicated are less functional compared to singular IBM's since Ajin's are more in command of their IMB's while only one's currently in useAjin: Demi Human: Chapter 26: Page 15. Blunt attacks cancel out the regenerative capabilities of IMB's by causing particles of different information to mix with their particles, making both particles unable to rebind with each other, but rather dissipateAjin: Demi Human: Chapter 26: Page 16-17. Destroying the head of an IBM with a blunt attack causes the connection between IBM and Ajin to cut offAjin: Demi Human: Chapter 5: Page 14. IBM's, while naturally invisible to the naked eye, can be seen if strong emotions are aimed at them, such as maliceAjin: Demi Human: Chapter 11: Page 29. IBM's start to decay as soon as they're created, meaning they become more and more fragile as time passes.
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Notable Attacks/Techniques:
IBM Particles - Unknown elementary particles blacken in coloration, they're explained by Ikuya to have come from the "energy" generated by the "human heart". These particles have the innate effect of granting "immortality" onto those who retain them, these humans are colloquially known as "Ajin". These beings have great control over these particles, allowing them to be used for a multitude of reasons.
*Immortality and Regeneration - Ajin's are described as "immortal" beings which can't die from "war, accidents, sickness or suicide" as they'll continually regenerate if fatally damaged. This regeneration is through the IBM particles present within their body, re-attaching severed limbs to even creating entirely new ones if needed. This extends to even the consciousness of Ajin's, as if they're decapitated they'll regenerate an entirely new head, containing the same memories and consciousness of the previous one. The level of regeneration provided to Ajin's because of these IBM particles is exceptional, being capable of regenerating from "minor" injuries such as de-attached limbs, ruptured organs, and decapitation, to more "severe" injuries such as having one's entire lower half reduced to fleshy mush, having most of one's body destroyed by explosives, only leaving the upper torso and head, singular body parts like arms and hands, to even being reduced to dust by explosives, all of which is capable of being regenerated from by Ajin's. 
**Corrosive Substance - If any physical object impedes the regenerative process of an Ajin then the body automatically generates a unique substance which corrodes and dissolves that physical object until the wound can fully heal, similar to how enzymes within one's liver breaks down alcohol. 
Matter Manipulation and Radiation Manipulation - Ajin's can generate, manipulate and fuse IBM particles together to create active entities, such as IBM's. They're also able to generally manipulate these particles, exerting them from their body in a shadow aura. IBM particles are described to share multiple similarities with radioactive isotopes. They both generate radiation, both capable of undergoing radioactive decay, both even generate special radioactive waves, with IBM particles generating a wave called "IBM waves" which act similarly to gamma rays.
*Hive Mind - Ajin's can control the movements and actions of their IBM's through the linking of their visions, doing so through a special electromagnetic wave that only the Ajin and IBM can create, hear and communicate through.
**IBM - Ajin's are capable of generating "IBM's". Vaguely humanoid shaped creatures entirely constructed of an unknown matter colloquially known as "IBM particles". These beings, while normally equal in strength with humans, can freely access "hysterical strength" because of lacking human limitations such as the mind. Allowing them to preform superhuman feats of strength and speed. They're also beings who are normally invisible to those who aren't Ajin's because of having a perfect transmittance rating. Causing light to pass through them without refracting an image into the eyes of non-Ajin's. IBM's are also beholden to the emotional state of their Ajin, meaning if their Ajin's are depressed or apathetic, they're extremely hard to control, which is shown in Kei's case. While Ajin's which are "free" or motivated can easily control their IBM's.
***Flood - Ajin's which have undergone a "once in a lifetime" emotional event, such as seeing a loved one die, could trigger a "flood". The accumulation of IBM particles, to the point of being forcefully exerted from the Ajin's body in a tornado-like fashion. These "floods" usually generate about an average of 10-20 IBM's that destroy everything around the Ajin. However, given Kei's density of IBM particles, his "flood" was capable of spawning hundreds to possibly even thousands of IBM's across the town he was located in.
"Peculiar Voice" - Ajin's screams are described as "peculiar voices" by knowledgeable sources. With them having the effect of inducing "tonic immobility" onto those who hear it, which causes muscle tension to change within the body, leaving them in an immobilized state for a couple seconds. 
==Notable Matchups==
Victories:
Losses:
Inconclusive:
==References==
Category:Characters
Category:Ajin
Category:Anime Characters
Category:Immortals
Category:Intangibility Users
Category:Invisibility Users
Category:Male Characters
Category:Manga Characters
Category:Regeneration Users
Category:Self-Sustenance Users
Category:Sociopaths
Category:Sound Users
Category:Status Effect Users
Category:Teenagers