[[quoteright:250:[[Webcomic/OnePunchMan http://static.tvtropes.org/pmwiki/pub/images/OPM_aura_9217.png]]]]
[[caption-width-right:250: [[ArtShift Everyone else]] just saw [[CrouchingMoronHiddenBadass a guy in a dumb costume]].]]

->'''Worf:''' He decided to kill me while I was looking him right in the eyes, and I never saw it. But Kurn did, and he was three meters away.\\
'''Jadzia Dax''': Worf, I don't think you can tell someone's going to kill you by looking at them.\\
'''Worf''': A Klingon can. It is an instinct. The ability to look someone in the eyes and see the decision to kill.
-->-- ''Series/StarTrekDeepSpaceNine'', "Sons of Mogh"

Particularly common in Eastern works is the idea that when someone intends to inflict pain or death, their "Killing Intent" can be felt as a slight pressure or chill, even to people unaware of their presence. The effect is amplified if you [[WindowsOfTheSoul look into their eyes]], or if they want to hurt ''you'' in particular. Trained and vigilant warriors generally radiate low levels of Killing Intent at all times, and anyone who constantly radiates ''high'' levels of Killing Intent is either evil or [[BloodKnight obsessed with combat]] (and may [[NotSoDifferent feel kinship towards other people who possess it]]). There's generally a noticeable difference between "hot-blooded" and "cold-blooded" Killing Intent too. Sometimes this is considered a form of {{Ki|Attacks}}, or has an effect on Ki.

While most people can only detect Killing Intent subconsciously, people who have enough combat experience (or are just perceptive) can notice it so well that it borders on SpiderSense or DetectEvil. Likewise, some particularly vicious characters hone their Killing Intent to the point where it can leave people nearby paralysed with fear or even inflict hallucinations. In either case this will be treated as [[CharlesAtlasSuperpower a mundane skill and not a supernatural ability]], and can easily [[MagicRealism show up without comment in works which don't otherwise have any fantastic elements]]. Some people will even tell you it's possible in RealLife.[[note]]sometimes adopting [[DoingInTheWizard the less mystical explanation]] that it's really detecting slight differences in air pressure, temperature, smell and so on[[/note]]

While having some degree of Killing Intent is normally [[TeachHimAnger required to fight effectively]], sometimes a character will be able to attack without exuding any Killing Intent at all (through LackOfEmpathy, [[EmotionSuppression controlling]] their [[NervesOfSteel emotions]] or even [[{{Cloudcuckoolander}} spacing out while fighting]]), making them an [[ConfusionFu unpredictable combatant]] or even a HeroKiller.

In some works Killing Intent can be used as a rough way to measure PowerLevels, as [[JapaneseSpirit someone with sufficient willpower to resist an enemy's Killing Intent will necessarily be at least as strong as them]].

Since it's hard to depict a sixth sense through a visual medium, Killing Intent is often [[EditorialSynaesthesia represented]] in {{Anime}} and {{Manga}} by ArtShift towards a more serious style, or even a BattleAura (the metaphorical version), though this has become less common over time. When Killing Intent is considered a form of (or augments) Ki, it can be represented by a ''non''-metaphorical aura.

The Japanese term for this is ''sakki'' (殺気[[note]]The individual kanji are pronounced ''satsu'' and ''ki'', respectively, but due to Japanese grammar rules, the ''-tsu'' in the former is dropped and the consonant in ''ki'' is [[https://en.wikipedia.org/wiki/Gemination geminated]], turning it into ''sa-'' + ''-kki''.[[/note]]), which is primarily used by [[{{Ninja}} practitioners of Ninjutsu]]; "Killing Intent" is the most literal translation.

Compare DetectEvil and AllergicToEvil, which can overlap with this trope if a character's sensitivity to Killing Intent is enhanced by supernatural means. Can be used as a justification for SpiderSense, TheForceIsStrongWithThisOne, and KungFuClairvoyance. See also DeathGlare and {{Ki|Attacks}}.



[[folder:Anime and Manga]]
* In ''Manga/{{Naruto}}'' most experienced ninjas can explicitly use killing intent, and [[http://naruto.wikia.com/wiki/Killing_Intent using it to paralyse enemies]] is a recognised strategy (most famously used by Orochimaru, and the first clash between [[{{BFS}} Zabuza]] and [[CrouchingMoronHiddenBadass Kakashi]]). This ability explicitly does not use [[{{Mana}} chakra]].
* In ''Manga/{{Bleach}}'' the force of [[BloodKnight Kenpachi Zaraki]]'s killing intent causes Ichigo to hallucinate that he is being stabbed as he approaches.
* The martial artists in ''Manga/RanmaOneHalf'' can sense if someone is about to attack them. Ranma is so good, he sometimes dodges attacks in his ''sleep''. Unfortunately for Ryoga, his "danger sense" is also [[TheExitIsThatWay affected]] by his terrible sense of direction.
* Present for one moment of ''Manga/JojosBizarreAdventureBattleTendency'', when [[OldMaster LisaLisa]] is about to fight [[BigBad Kars]], and notes that she can't detect his Killing Intent. [[spoiler: [[WorthyOpponent Despite his earlier claims]], [[SubvertedTrope he never intended to fight her fairly]] for the Macguffin, and instead has a mook ambush her mid fight while he hides, so he can attack her from behind, claim the Macguffin, then sic his zombie army on Joseph.]]
* In ''Manga/OnePiece'', this is one of the functions of Haki.
** Zoro does this as well. His "Kiki Kyutoryu: Asura" is said by Kaku to be a illusory manifestation of his killing intent.
* In ''Manga/LoneWolfAndCub'', every half-way decent martial artist possesses this ability.
* ''Manga/RurouniKenshin'' uses this, while [[MaybeMagicMaybeMundane leaving it ambiguous whether it's based on Ki or just body language]]. The only time Kenshin had significant trouble fighting against someone of a (slightly) lower skill level was Soujirou, whose combination of being a StepfordSmiler and super speedster made him both difficult to read and difficult to react to.
** Additionally, swordsmen of high enough caliber generate BattleAura that can cause minor destruction.
* In ''Manga/FullmetalAlchemist'' this is how Riza [[spoiler:figures out that Selim Bradley is actually the homunculus Pride.]]
* One of the many appliances of Nen in ''Manga/HunterXHunter''. It's worth noting that people unprotected by their own aura could potentially die or suffer serious psychological trauma if they were to be attacked by a strong enough killing intent.
* For a split second in ''{{Manga/Murcielago}}'', right before Kuroko gets serious with fighting Yukari, Yukari sees a vision of a multi-armed skeleton tangled around her with a scythe around her neck and Kuroko's trademark giant tongue sticking out of its mouth.
* Parodied in ''Anime/BusouShinki'', where Clara becomes alarmed and claims that she's "never felt so much killing intent"... shortly before a letter falls on her head (she's 15cm tall, but still).
* A silly example in ''Webcomic/OnePunchMan'', where [[UltimateLifeform Asura Rhino]]'s combat instincts cause him to see the protagonist [[ArtShift with heavy shading]] and [[BattleAura surrounded by dark flames]]... but he's still drawn in [[NonstandardCharacterDesign a simple style]] and with a baffled expression.
* Martial artists in ''Manga/AngelDensetsu'' are constantly amazed at being unable to sense Kitano's killing intent. They always assume he is so skilled that he can hide this, instead of realizing he has [[ActualPacifist less anger than an angel]].
* In ''Manga/{{Monster}}'', the eponymous SerialKiller is so evil that he can terrify people [[http://static.tvtropes.org/pmwiki/pub/images/monster_killingintent_350w_9552.png just by being in the same part of the building.]]
* In ''Manga/KenichiTheMightiestDisciple'', every martial artist senses or projects killing intent at one time or another. On at least one occasion, Sakaki has blown away an entire room of people. And with disciple-level fighters it can be used to make the opponent lock up and break their focus.
* In ''Manga/{{Basilisk}}'' the Dojitsu is an ability that can turn attacker's killing intent back on themselves, thus violently attacking themselves.
* ''Manga/{{Toriko}}'' has killing intent manifest as monstrous {{Animal Battle Aura}}s known as "Intimidations".
* [[Manga/FistOfTheNorthStar Kenshiro]] manifests one of these which freaks out a Fang Clan GiantMook, a nearly feral beast who goes into a panic when he senses Kenshiro's sheer badassery and intent to wipe out the entire Fang Clan.
** In addition, this was used as a final test to determine who would be the successor of Hokuto Shinken. The test involved Kenshiro and Raoh coming face-to-face with a tiger. When the tiger backs away from Ken, Raoh takes this as a sign that the tiger thinks Ken is too weak and then kills him. In truth, the reason the tiger backed away from Ken was because he sensed so much power and killing intent radiating from him in comparison to Raoh that he feared for his own life.
* Nagisa from ''Manga/AssassinationClassroom'' can freely intimidate or paralyze his opponents by emitting killing intent. He once used it, along with a single (theoretically nonthreatening) sentence and a calm smile, to send middle-school bullies home in tears; he's also used it in combat to [[OhCrap scare the living daylights]] out of elite, trained government special ops soldiers. For the record, Nagisa is a small, kindhearted, fairly unremarkable middle school student in a bottom-rank class, and is so physically dainty that he's [[DudeLooksLikeALady been mistaken for a girl several times]]. It should be noted that his killing intention is more of a natural talent. It is commented that he is born with talent at the wrong era. Had time been different, he would have been an assassin without equal.
* ''Anime/DragonballSuper'': Beerus says that he has a refined ability to detect a person's killing intent (which is distinct from ki in general), as part of his powerset as the God of Destruction. [[spoiler:He uses this to judge that Zamasu truly does intend to kill his mentor Gowasu, though he doesn't take the killing intent as proof and confirms his suspicions before taking action.]]
* ''Franchise/LyricalNanoha''
** In ''Manga/MagicalRecordLyricalNanohaFORCE'', when the Special Duty Section 6 are arresting Hades Vandein, his killing intent is so strong that everyone sees a hallucination how he slices Teana down. [[ObviouslyEvil And this guy always]] [[BlatantLies pretends to be an innocent citizen.]]
** Chapter 45 of ''Manga/MagicalGirlLyricalNanohaVivid'' has [[{{Samurai}} Micaiah]] deliberately emanating this [[spoiler:even though she's just attacking with a practice sword]] so she could bring out the depressed [[TheAce Sieglinde's]] Black Jeremiah side as a lead-in to her pep talk for the latter.
* Deconstructed in ''Anime/PsychoPass''. Having a LackOfEmpathy is ''illegal'', and can lock you out of most jobs... but if LackOfEmpathy upgrades to Killing Intent, the cops gain instant authorization to use lethal force with no repercussions or oversight. And an adrenaline rush counts as Killing Intent, regardless of ''why'' you're having an adrenaline rush, [[VictimBlaming which often leads cops to execute the people they just saved from dangerous murderers]].
* This is the implied reason Bando from ''Anime/ElfenLied'' is able to sense and predict Lucy's [[CombatTentacles vectors]] even when he has no prior experience (or even knowledge) of what a Diclonius is capable of: Lucy's immense hatred for humanity and desire to wipe them out bleeds into her vectors, which are otherwise invisible and selectively-tangible. Bando can't see her vectors directly, but due to his combat training and own [[BloodKnight love of life-and-death combat,]] he can get a sense of when and where Lucy's attacks are coming from.
* Shows up repeatedly in ''Manga/VinlandSaga''. The most notable example is probably when [[BloodKnight Thorkell]] gets hyped for a fight and his opponent [[https://vignette2.wikia.nocookie.net/vsbattles/images/4/42/Thorkell.jpg visualizes his killing intent thusly.]][[spoiler:Said opponent never even gets to lift his weapon; his mind breaks from the killing intent and he spends the rest of the series as a vegetable.]]
* In ''Manga/MyHeroAcademia'' [[spoiler:Stain]] shows evidence of this after [[spoiler:being captured by Izuku, Iida, and Todoroki during the Field Training Arc - he escapes, kills the Nomu trying to abduct Izuku, and declares that [[{{Determinator}} the only hero worthy of killing him is All Might]]. Even Endeavor, the #2 Hero, is [[DeerInTheHeadlights frozen in his tracks]] during this declaration]]. The anime represents this by having black fog with a reddish tint envelop everyone present, with glowing red eyes appearing over them as [[spoiler:Stain finishes his speech]]. Note, [[spoiler:this character already had a different ability established, which means this ''wasn't a power.'' He made everyone present freeze with utter terror from sheer ''force of will''.]]

[[folder: Comic Books]]
* In ComicBook/{{Batgirl}}, Cassandra seeks out Lady Shiva to request her aid. Before she even knows Shiva is there, Cassandra feels a "wind like a thousand knives" so cold that it affect her, despite her saying that she's [[CharlesAtlasSuperpower never really felt cold before]].

* In ''Film/KungFuHustle'', Sing is sent to retrieve [[NamesToRunAwayFromReallyFast The Beast]] near the end of the movie. When he ends up right outside the room The Beast is in, he hallucinates a wave of blood bursting through the door [[Film/TheShining Shining-style.]]
* In ''{{Film/Hero}}'', [[ProperlyParanoid the emperor]] keeps a number of candles between himself and any visitors allowed to come within a hundred paces, claiming that the flames are disturbed by "murderous intent" (all of them blowing towards the emperor when Nameless is thinking of killing him, and then blowing in random directions when his resolve wavers). No sort of magical explanation is given for this, and Nameless' unquestioning acceptance of it suggests that he is familiar with the idea, presumably making it a variation of this trope, rather than a separate sort of DetectEvil magic.
* In the live-action adaptation of ''Film/RurouniKenshin'', Jin-e can stop people from breathing by looking into their eyes. He explicitly states that [[CharlesAtlasSuperpower it's not supernatural]], despite the fact that it can supposedly only be broken by killing Jin-e.
* In ''[[Film/RogueOne Rogue One: A Star Wars Story]]'', Chirrut, a [[BlindSeer blind]] [[BareFistedMonk monk]] that was once a guardian of a Jedi temple and [[MaybeMagicMaybeMundane may or may not be Force-sensitive]] asked if Captain Andor had the face of a killer. His [[CloudCuckoolandersMinder colleague]] Baze said he didn't; he had a kind face, the face of a friend. Chirrut says that the Dark Side of the Force stirs around those who have intent to kill, and Jyn (with added observation by [[RobotBuddy K2S0]] that his rifle was in Sniper configuration) deduces that Andor intends to assassinate her father.

* Nico di Angelo demonstrates a ''weaponized'' version of this in the last book of Heroes of Olympus. When someone threatens to have one of his friends executed, he strips him of his identity and sends him to the Fields of Punishment through willpower alone.
* In ''LightNovel/FullMetalPanic'' Sousuke's past as a {{child soldier|s}} has given him the ability to sense killing intent, which he uses to set traps for assassins targeting him.
** This was also used to torment him. [[spoiler: One of Mithril's agents would observe him via the scope of a rifle, and find that Sousuke actually got visually agitated when he did this. It's implied that much of Sousuke's misbehavior in school is caused by him sensing the agent's killing intent without being able to tell where it's coming from, causing him to lash out against people nearby.]]
* ''LightNovel/SwordArtOnline'' refers to the ability to sense killing intent from monsters in the game as "Hypersense", which may or may not actually exist.
* In ''[[LightNovel/{{Overlord2012}} Overlord]]'', [[BattleButler Sebas]] can control his Killing Intent with incredible strength and precision, to the point where he can stare into a group of hardened warriors and reduce one of them to a gibbering wreck without alerting the others. Normal people exposed to his Killing Intent could literally die of fright. At one point Sebas even uses this as a form of TrainingFromHell, teaching Climb a [[SuperReflexes "mental overclock"]] ability by having him experience what it's like to be a hair away from death.
* Lina Inverse of ''LightNovel/{{Slayers}}'' has been known to use this to tell when somebody's sneaking up behind her in a fight. Gourry and Zelgadiss may also be capable of it - they've been known to react to attacks they couldn't have seen coming.
* In ''Literature/TheSpiritThief'', people who are very good at killing can identify others like them upon looking at them, and sense their desire to kill. Josef is using it as a SpiderSense of sorts, telling him when to treat a fight seriously.
* ''Literature/APracticalGuideToEvil'' doesn't name it as such, but Named can create an aura like this by flaring their power. As for what happens if you threaten to steal [[BloodKnight Ranger]]'s fun...
-->''The blade did not move, and neither did the hand that held it. And yet for a heartbeat I felt like my throat had been cut, like blood was gushing out. The intent had been so strong it had almost become a fact.''
* In ''LightNovel/ACertainMagicalIndex'', [[ChurchMilitant Vento of the Front]]'s "Divine Punishment" causes anyone in the world who aims hostility at her to be knocked unconscious unless protected by powerful magic. [[MadScientist Amata Kihara]] is immune to its effects due to being a {{Sociopath}} who can murder people without feeling any hostility towards them at all, comparing it to pulling up weeds.

[[folder:Live Action TV]]
* In one episode of ''Series/LieToMe'', the Lightman group try to use their observational abilities to find an assassin by detecting his or her Killing Intent. The nature of the Lightman group's abilities means that they have to see the person's face for detection.
** Played with at one point. Lightman thought someone had murderous intent and was planning to kill someone else, but it was actually [[DrivenToSuicide suicidal intent]]. They managed to stop her her before she goes through with it. Just because you have killing intent doesn't mean you're planning to kill another.
* In ''Series/StarTrekDeepSpaceNine'', Worf once stated that Klingons can see murderous or violent intent in a person's eyes.

[[folder:Tabletop Games]]
* ''TabletopGame/DungeonsAndDragons'' 3.5 has the ''detect hostile intent'' [[PsychicPowers psionic power]]. While active you can sense the presence of people with violence on their minds, are immune to surprise attacks (unless the attackers' minds are somehow shielded), and can use the Sense Motive skill as a free action.

[[folder:Video Games]]
* ''Franchise/StreetFighter'' utilizes the {{Ki|Attacks}}-based version as a major element known as the ''Satsui no Hadou'' (Surge of Murderous Intent). [[BloodKnight Akuma]] is considered a master of this energy and as such fights and kills anyone who faces him. Ryu also temporarily gets possessed by this energy as [[SuperpoweredEvilSide Evil Ryu]], and tends to go further than Akuma. This is an especially present element in the ''[[VideoGame/StreetFighterAlpha Alpha]]'' series and the ''Ryu Final'' Manga. [[VideoGame/StreetFighterIV Oni]] is Akuma consumed beneath the ''Satsui no Hadou'' and turned into a monster that seeks only to kill and radiates his killing intent as a terrible aura around him.
* In the Franchise/{{Nasuverse}}, skilled fighters can do this. In the ''Unlimited Blade Works'' route of ''VisualNovel/FateStayNight'' Shirou is able to sense that he is being followed by [[TheSnarkKnight Archer]] because he is taunting Shirou with his killing intent. When Shirou calls him out on it he is impressed that such an [[IneptMage unskilled magus]] could detect it. Shirou also uses Archer's killing intent to tell from where he is launching his [[TrickArrow attack]] against Berserker during their fight in the graveyard, and notes that [[spoiler:it's directed at more than ''just'' Berserker]].
** And then there's [[spoiler:True Assassin's]] [[StealthExpert Presence Concealment]] skill, which renders him virtually impossible to find, unless he's preparing to attack a target in which case his own massive Killing Intent betrays him and makes he much easier to find. Though, in all fairness, when this time comes it generally is already too late.
* [[BloodKnight Angela]] from ''VisualNovel/PrincessWaltz'' is right there with with the likes of [[Manga/{{Bleach}} Kenpachi]] in terms of bloodlust. In many occasion her glare has caused hardened warriors to flinch and even think that they were vomiting blood after being ImpaledWithExtremePrejudice just from being 'hit' by it.
* In ''Vampire Savior[=/=]VideoGame/{{Darkstalkers}} 3'', [[AxCrazy B.]][[EnfantTerrible B.]] [[CuteAndPsycho Hood]], a [[PsychoForHire bloodthirsty]] [[RankInflation Special S-Class]] [[BountyHunter Darkhunter]], is so malevolent that her stare alone can instill a paralyzing fear into the [[PowerLevels lower-ranked]] Darkstalkers of Makai. This same darkness in her heart was what caught [[BigBad Jedah]]'s attention and allowed her to enter his [[PocketDimension Majigen]]. Let it be said that B.B. Hood is the ''TokenHuman'' of the cast.
* In ''VideoGame/SuperSmashBros'', while chatting with Otacon, [[Franchise/MetalGear Snake]] mentions [[Franchise/TheLegendOfZelda Ganondorf]] is "giving off a murderous vibe." He's also uneasy with trying to fight him - "even getting close to him makes my skin crawl."
* The ''Franchise/{{Pokemon}}'' game franchise has the attack Dark Pulse, introduced in the fourth generation. It's described as "a horrible aura imbued with dark thoughts", and may cause enemies to flinch.
* In ''VisualNovel/HigurashiWhenTheyCry'', Keiichi refers to being able to feel (or not feel) "murderous intent" and sometimes uses that to decide if someone is trustworthy.
* ''VideoGame/{{Undertale}}'':
** Killing intent is actually the entire reason your attacks damage monsters at all, as monsters are weak to strong negative emotions (being made of magic and all). As a result, bosses in a [[KillEmAll No Mercy run]] tend to be {{One Hit Kill}}ed. Conversely, in a PacifistRun, when Undyne challenges you to a rematch during her "date", you'll deal only 1 damage whether you use the "Fake Hit" command or Fight her for real, because to even get to this point you have to go out of your way to never kill anyone.
** Monsters seem able to pick up on your killing intent pretty easily; despite the lack of any physical changes neutral monsters will treat a pacifist PlayerCharacter very different from one who's killing regularly or especially on a No Mercy run.

[[folder:Web Comics]]
* Early in ''Webcomic/TheDragonDoctors'', the invisible MurderInc assault is detected in advance due to so many people radiating killing intent at the same time.
* One ''WebComic/NerfNow'' arc featured a RED Engineer on a [[TranquilFury Tranquil]] [[RoaringRampageOfRevenge Rampage Of Revenge]] after his SentryGun is destroyed. A BLU Heavy-Medic pair confront him, but [[http://www.nerfnow.com/comic/156 are intimidated]] by his obvious rage. [[http://www.nerfnow.com/comic/157 They think better of fighting him]], and as a result they manage to survive their encounter with him, where BLU Scout, Sniper, Demo, and Soldier did not.

[[folder:Real Life]]
* As mentioned above, Killing Intent can occur in everyday life, to an extent; i.e. body language, verbal cues, and the way you can just FEEL it when someone is glaring at you.
* Ever been walking along and all of a sudden you feel the hair on the back of your neck start to stand, or you feel a twinge in your gut, you look around and realize that a person or an animal is staring at you? You may not see, hear, or smell anything consciously, but your subconscious mind still picks up on these cues and reacts to them.