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* XRayVision: Alpha can detect others through walls and impart this onto Akira, letting him see the silhouettes of others hiding behind obstacles.
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* XRayVision: Alpha can detect others through walls and impart this onto Akira, letting him see the silhouettes of others hiding behind obstacles.obstacles.
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[[center:[- [[WMG:'''''Literature/RebuildWorld'' [[Characters/RebuildWorld character index]]'''\\
[[Characters/RebuildWorldAkira Akira]] | '''Alpha''' | [[Characters/RebuildWorldMajorCast Major Cast]] | [[Characters/RebuildWorldOtherCharacters Other Characters]] ]]-]]]
[[Characters/RebuildWorldAkira Akira]] | '''Alpha''' | [[Characters/RebuildWorldMajorCast Major Cast]] | [[Characters/RebuildWorldOtherCharacters Other Characters]] ]]-]]]
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* DrivesLikeCrazy: Justified, considering she’s often doing a HighSpeedMissileDodge. Due to this, Akira often needs to use one of his PoweredArmor arms simply to stand steady when she drives him. Togami riding as a passenger at one point, wasn’t so fortunate, and had to use all his limbs just to keep from being thrown off (eventually falling anyway).
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* DrivesLikeCrazy: Justified, considering she’s often doing a HighSpeedMissileDodge. Due to this, Akira often needs to use one of his PoweredArmor arms simply to stand steady when she drives him. Togami riding as a passenger at one point, wasn’t so fortunate, fortunate and had to use all his limbs just to keep from being thrown off (eventually falling anyway).
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* LadyAndKnight: She's a classic Dark Lady to Akira's Dark Knight.
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* LadyAndKnight: She's a classic Alpha is the seductive, manipulative Dark Lady to Akira's Dark Knight.Knight. She's clearly using him but provides the support and resources Akira needs to succeed as a hunter. Akira is completely loyal to her because of how important her support is and for giving him a chance to be more than an impoverished StreetUrchin.
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* MsFanservice: Alpha has a habit of appearing in various fanservice-y outfits, sometimes to inspire Akira or get him to be more active, and other times just for her own "fun". Best exemplified with appearing all but naked in a garter belt and tie as part of a "strip clothes off with each right answer" game for a quiz, which she does to intentionally make Akira feel uncomfortable. She does this so often that her teasing and {{Stripperific}} outfits become less effective on him due to overexposure even though he still responds to other women, much to her annoyance.
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* MsFanservice: Alpha has a habit of appearing in various fanservice-y outfits, sometimes to inspire Akira or get him to be more active, and other times just for her own "fun". Best exemplified with by appearing all but naked in a garter belt and tie as part of a "strip clothes off with each right answer" game for a quiz, which she does to intentionally make Akira feel uncomfortable. She does this so often that her teasing and {{Stripperific}} outfits become less effective on him due to overexposure even though he still responds to other women, much to her annoyance.
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* OOCIsSeriousBusiness: Generally an InvokedTrope with her expression being like a barometer of how much danger Akira is in he can check. But even given that, there's [[spoiler:Alpha absolutely panicking when Yanigisawa surprise attacks Akira and starts interrogating him.]]
to:
* OOCIsSeriousBusiness: Generally an InvokedTrope with her Invoked. Alpha's expression being like acts as a barometer of how much danger Akira is in. So long as Alpha is calm and in control, he can check. has no reason to worry as long as he has her support. But when she's flustered and anxious, Akira knows that things are getting too dangerous. But even given that, there's [[spoiler:Alpha absolutely panicking when Yanigisawa surprise attacks Akira and starts interrogating him.]]
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* TheOnlyWayTheyWillLearn: Alpha uses this many times as part of teaching Akira, largely due to him overly depending on her to answer every question he has.
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* TheOnlyWayTheyWillLearn: Alpha uses this many times as part of teaching Akira, frequently thrusts Akira into danger to get him to learn on the fly rather than explain every little thing to him. This is largely due to him being overly depending dependent on her to answer answering every question he has.
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* UnlimitedWardrobe: Alpha can freely change her appearance at will, resulting in her putting on a variety of outfits throughout the story. Though she's just as prone to going in the nude just to get a rise out of Akira.
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* UnlimitedWardrobe: Justified. Being an AI whose appearance is an augmented reality projection, Alpha can freely change her appearance at will, resulting in her putting on a variety of outfits throughout the story. Though she's just as prone to going in the nude just to get a rise out of Akira.
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[[quoteright:350:https://static.tvtropes.org/pmwiki/pub/images/alpha_rebuild_world_2.png]]
!!'''Voiced by:''' Creator/YurikaKubo
!!'''Voiced by:''' Creator/YurikaKubo
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[[quoteright:350:https://static.tvtropes.org/pmwiki/pub/images/alpha_rebuild_world_2.png]]
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* ExpositionFairy: Her scanning abilities and well of knowledge means that she's often the one to point out things to Akira (and the reader).
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* ExpositionFairy: Her scanning abilities and well of knowledge means mean that she's often the one to point out things to Akira (and the reader).reader), whether it's the presence of enemies or the history of the ruins they're exploring.
* FakingTheDead: Alpha can fool electronic sensors into mistaking her for another hunter, making it appear as though she'd been killed by an attack to get others to lower her guard. For example, Alpha makes it appear as though she'd been sliced in half when Nelia breaks an Old World knife to cut through a wall. This gets Nelia to lower her guard and lures her into fighting Akira in close quarters.
* FakingTheDead: Alpha can fool electronic sensors into mistaking her for another hunter, making it appear as though she'd been killed by an attack to get others to lower her guard. For example, Alpha makes it appear as though she'd been sliced in half when Nelia breaks an Old World knife to cut through a wall. This gets Nelia to lower her guard and lures her into fighting Akira in close quarters.
* FemmeFatale: She's known as the "Tempting Specter" for her tendency to lure in hunters who can see her with her disarmingly beautiful appearance. She uses her looks to [[DistractedByTheSexy distract others]] on several occasions, giving Akira an opening to act. Even as she helps Akira become a better hunter, she continues to send him into one bloody battle after another for the sake of earning money and giving him combat experience. [[spoiler:He's the 499th person she's guided, with many of the 498 people before him suffering grisly fates after failing to meet expectations.]]
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* HollywoodHacking: As an AI from the Old World, Alpha is able to easily hack into technology to pull out information. She's also able to do this to the various {{Cyborg}} monsters prowling the wastelands to make them see what she wants them to see or scramble their targeting systems.
* HomefieldAdvantage: Her scanning and detection abilities work best in the Kuzusuhara Ruins that Akira met her in. Outside of them, her abilities are reduced, especially when she's underground and in another ruin she's unfamiliar with.
* HypercompetentSidekick: Alpha may be Akira's VirtualSidekick, but he's knows that he never would have gotten as far as he has without her constant combat support, training, and information gathering. So despite annoying him with her flirting, he has absolute faith in her. She's just as aware of this, continually reminds him of how essential she is to his success to manipulate him to her own ends.
* HomefieldAdvantage: Her scanning and detection abilities work best in the Kuzusuhara Ruins that Akira met her in. Outside of them, her abilities are reduced, especially when she's underground and in another ruin she's unfamiliar with.
* HypercompetentSidekick: Alpha may be Akira's VirtualSidekick, but he's knows that he never would have gotten as far as he has without her constant combat support, training, and information gathering. So despite annoying him with her flirting, he has absolute faith in her. She's just as aware of this, continually reminds him of how essential she is to his success to manipulate him to her own ends.
to:
* HollywoodHacking: As an AI from the Old World, Alpha is able to can easily hack into technology to pull out information. She's also able to do this to the various {{Cyborg}} monsters prowling the wastelands to make them see what she wants them to see or scramble their targeting systems.
* HomefieldAdvantage: Her scanning and detection abilities work best in the Kuzusuhara Ruinsthat where Akira met her in.her. Outside of them, her abilities are reduced, especially when she's underground and in another ruin she's unfamiliar with.
* HypercompetentSidekick: Alpha may be Akira's VirtualSidekick, buthe's he knows that he never would have gotten as far as he has without her constant combat support, training, and information gathering. So despite annoying him with her flirting, he has absolute faith in her. She's just as aware of this, this and continually reminds him of how essential she is to his success to manipulate him to her own ends.
* HomefieldAdvantage: Her scanning and detection abilities work best in the Kuzusuhara Ruins
* HypercompetentSidekick: Alpha may be Akira's VirtualSidekick, but
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* LetUsNeverSpeakOfThisAgain: Akira mulling buying her a RobotGirl body makes her angry and insist he never bring it up.
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* LetUsNeverSpeakOfThisAgain: Akira mulling over buying her a RobotGirl body makes her angry and insist insists he never bring brings it up.up again.
* LongHairIsFeminine: Her usual appearance gives her an enormous mane of hair that cascades down to her thighs. This and her ImpossibleHourglassFigure emphasize her feminity and her attempts to use sex appeal to control Akira.
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** She is particularly wary of Akira getting too attached to any other humans, to the point she actually gives Akira some orders for the express purpose of disrupting his relationships (such as asking him to run away from Katsuya in order to create a rift with Elena and Sara from them one-sidedly hearing Katsuya’s side of their argument.)
to:
** She is particularly wary of Akira getting too attached to any other humans, to the point she actually gives Akira some orders for the express purpose of disrupting his relationships (such as asking him to run away from Katsuya in order to create a rift with Elena and Sara from them one-sidedly hearing Katsuya’s side of their argument.)
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* {{Telepathy}}: Akira is able to communicate with Alpha telepathically through their contract, which alleviates a lot of the problems regarding Akira talking to thin air, though people still wonder why he turns to empty space.
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* {{Telepathy}}: Akira is able to communicate with Alpha telepathically through their contract, which alleviates a lot of the problems regarding Akira talking to thin air, though people still wonder why he turns around to stare at empty space.
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* UnlimitedWardrobe: Alpha is able to freely change her appearance at will, resulting in her putting on a variety of outfits throughout the story. Though she's just as prone to going in the nude just to get a rise out of Akira.
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* UnlimitedWardrobe: Alpha is able to can freely change her appearance at will, resulting in her putting on a variety of outfits throughout the story. Though she's just as prone to going in the nude just to get a rise out of Akira.
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* XRayVision: Alpha is able to see detect others through walls and impart this onto Akira, letting him see the silhouettes of others hiding behind obstacles.
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* XRayVision: Alpha is able to see can detect others through walls and impart this onto Akira, letting him see the silhouettes of others hiding behind obstacles.
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!Alpha
[[quoteright:350:https://static.tvtropes.org/pmwiki/pub/images/alpha_rebuild_world_2.png]]
!!'''Voiced by:''' Creator/YurikaKubo
->''"Well? How is my supporting? You can't help but trust me now, can you?! Don't be shy, shower me with gratitude!"''
An AI that Akira encounters while exploring the Kuzusuhara Ruins. She offers him a contract for her to help him become a great hunter and escape the slums in exchange for helping her find a specific relic, training and supporting him for this purpose.
----
* AchievementsInIgnorance: Invoked. Alpha doesn't actually expect a whole lot from Akira. As a random slum kid with no outstanding talents aside from his ability to interact with her, he normally wouldn't make it far at all without her help. But she doesn't tell him this, as planting that expectation in his mind would only drag him down. By letting him believe what she thought was impossible for him is possible, she thinks he may be able to prove her expectations wrong.
* AFoolAndHisNewMoneyAreSoonParted: Discussed. Akira is dumbstruck when he gets 200,000 aurum for the first time, the most money he's ever had in his life at this point. He's baffled when Alpha refers to it as "spare change", and she advises him to invest it in important things like shelter and new equipment rather than hoarding it or splurging it.
* AFormYouAreComfortableWith: Alpha produced her current form based on Akira's own preferences in order to make herself more likable to him. She's also constantly changing clothes to see what appeals most to him as part of her efforts to keep him completely dependent on her.
* ArtificialIntelligence: She's a disembodied artificial intelligence from the Old World able to interact with Akira by directly beaming sensory information into his brain via augmented reality.
* AttentionWhore: She basically demands all of Akira's attention when he's not fighting, demeaning other girls and getting huffy when Akira reacts to them more than he does to her.
* AugmentedReality: Alpha is able to interact with Akira by sending sensory information directly to his brain on top of his perception of reality. This lets him see her, hear her, and "feel" her touching him despite her being completely intangible.
* AutomatedAutomobiles: Once Akira gets his own car, Alpha is able to take the wheel either by controlling his suit or hacking into the control module and remotely driving it from there so he can focus on aiming.
* BadassBiker: Motorcycle operation is one of her many specialties. She is able to operate a high-end motorcycle by controlling Akira's augmented suit, making it appear as though he'd driven one his entire life between the acrobatics she performs and the speeds she drives at.
* BareFistedMonk: By controlling Akira's augmented suit, she can give him hand-to-hand combat lessons simulating what it's like to fight a real opponent. Even with the augmented suit's abilities, Akira handily gets his butt kicked and would have gotten his head smashed like a watermelon from an axe kick of hers had she been real.
* BuxomBeautyStandard: She can change her appearance at will and use it to give herself impossibly large breasts, and outfits that emphasize them.
* CarFu: Alpha is sure to hack the control unit of any vehicle that Akira gets, and is more than willing to deliver a FoeTossingCharge to a yarata scorpion with his bike, or send mercenaries into another world with his car.
* CatchPhrase: "Leave it to me/Leave the rest to me."
* CombatPragmatist: [[spoiler:Insisting on Akira not shooting the head of the pickpocket Alna, specifically to invoke DeathIsDramatic and have Katsuya stay and talk to her before acting as a diversion for the pursuing mercenaries. She reasoned that if he'd killed Alna immediately, Katsuya would chase Akira instead.]]
* DoorStopper: As part of the contract writing process, Alpha says that the instruction manual would take more than ''120 years'' to recite. She uses this as justification to skip over it the way many online programs let you check off instead of reading the painfully dense terms and conditions, leaving Akira in the dark about what exactly he's agreeing to.
* DrivesLikeCrazy: Justified, considering she’s often doing a HighSpeedMissileDodge. Due to this, Akira often needs to use one of his PoweredArmor arms simply to stand steady when she drives him. Togami riding as a passenger at one point, wasn’t so fortunate, and had to use all his limbs just to keep from being thrown off (eventually falling anyway).
* DullEyesOfUnhappiness: In contrast to her lively persona, Alpha sports these in the manga when the reader is made privy to her thoughts, showing how she's scheming and actively trying to manipulate Akira.
* EvilMentor: Alpha constantly supports Akira with training drills, advice, and in-combat support to make him the best hunter he can possibly be. But it's also clear that she hasn't told him everything about the contract they've made and he doesn't know the details of what she's planning for him.
* ExpositionFairy: Her scanning abilities and well of knowledge means that she's often the one to point out things to Akira (and the reader).
* FamedInStory: She's a famous urban legend told among hunters exploring the Kuzusuhara Ruins known as the "Tempting Specter".
* FunSize: Her DigitalAvatar she uses on Akira’s info terminal. Seen more often in the manga.
* TheGadfly: She enjoys needling and flirting with Akira just to get a rise out of him, sometimes going nude just to see how he reacts. Despite showing jealousy when Akira pays attention to other women, she also asks if Shizuka is his type and creates computer-generated images of Sara and Elena naked to gauge his reaction.
* HollywoodHacking: As an AI from the Old World, Alpha is able to easily hack into technology to pull out information. She's also able to do this to the various {{Cyborg}} monsters prowling the wastelands to make them see what she wants them to see or scramble their targeting systems.
* HomefieldAdvantage: Her scanning and detection abilities work best in the Kuzusuhara Ruins that Akira met her in. Outside of them, her abilities are reduced, especially when she's underground and in another ruin she's unfamiliar with.
* HypercompetentSidekick: Alpha may be Akira's VirtualSidekick, but he's knows that he never would have gotten as far as he has without her constant combat support, training, and information gathering. So despite annoying him with her flirting, he has absolute faith in her. She's just as aware of this, continually reminds him of how essential she is to his success to manipulate him to her own ends.
* IgnoredExpert: When Akira first meets Alpha, he's initially wary of her and too impatient to follow her instructions to a T, resulting in him getting injured on multiple occasions. From then on, he begins following her instructions to the letter to protect himself, which also twists him around her little finger.
* ImpossibleHourglassFigure: While there are other busty girls in the slum city, Alpha stands out as being the most curvaceous character in the story, with enormous boobs, a tiny waist, and wide hips. {{Justified|Trope}} by her being an AI able to freely change her appearance via AugmentedReality.
* ImprobableAimingSkills: Alpha's targeting algorithms make it possible for Akira to aim accurately even in the worst of circumstances, like in near-pitch black darkness or while driving a car or a motorcycle. Her aiming support is what makes it possible for Akira to take down monsters far more easily than he'd normally be able to, with a level of accuracy described by the narrative as "god-like". That said, she's not infallible, and she's also limited by Akira's own body and ability to draw a bead.
* IndyPloy: Alpha makes one to make up for the fact that Akira is a BadLiar. When Shirou determines that Akira has a powerful backer, he guesses that it’s a rival company to Sakashita, and Alpha teases Akira aggressively to make him react as if Shirou guessed correctly. To keep him from discovering her existence.
* INeedYouStronger: The reason for her training and supporting Akira. She needs a strong hunter with absolute faith in her to brave the ruins and retrieve the relic she needs. Since Akira is the one who formed a contract with, she's trying to make him that hunter to achieve her goals.
* {{Intangibility}}: Due to her presence being a mere AugmentedReality avatar. Akira asks her why she doesn't walk through people in a crowd, prompting her to do so; the sight gives him nausea.
* InvisibleToNormals: Alpha can only be perceived by a select few individuals whose brains are compatible with the Old World internet like Akira's, or with specialized equipment. In addition, she can render herself invisible if she so chooses through her PerceptionFilter abilities.
* LadyAndKnight: She's a classic Dark Lady to Akira's Dark Knight.
* LetUsNeverSpeakOfThisAgain: Akira mulling buying her a RobotGirl body makes her angry and insist he never bring it up.
* ALighterShadeOfBlack: While Alpha is beyond the shadow of a doubt a ManipulativeBitch, comparing her to the willingness of other A.I.s like Tsubaki and Alice to slaughter people without a second thought, she comes off a bit better.
* LivingLieDetector: Akira comes to depend on her ability to read people this way by monitoring their vitals and facial expressions. Cyborgs are a bit of a blind spot for her, though, which she’ll point out.
* ManipulativeBitch:
** She tries to manipulate Akira and make him as reliant on her as possible so he'll do everything she says as part of her scheme to get that relic she needs. Her asides in the novels and manga show her deliberating how best to control him, constantly trying new ways of making herself the most important person in his life.
** She is particularly wary of Akira getting too attached to any other humans, to the point she actually gives Akira some orders for the express purpose of disrupting his relationships (such as asking him to run away from Katsuya in order to create a rift with Elena and Sara from them one-sidedly hearing Katsuya’s side of their argument.)
* MasterSwordswoman: Akira's sword movements when under her control are invariably described like this.
* MissionControl: Alpha’s support mostly consists of highly advanced versions of this combined with AugmentedReality and then PeoplePuppets aid..
* MsExposition: Alpha possesses a vast amount of information on nearly any topic, from weapons, to combat techniques, to vehicle operation. As such, she's usually the one expositing to Akira (and the reader) about a given topic.
* MsFanservice: Alpha has a habit of appearing in various fanservice-y outfits, sometimes to inspire Akira or get him to be more active, and other times just for her own "fun". Best exemplified with appearing all but naked in a garter belt and tie as part of a "strip clothes off with each right answer" game for a quiz, which she does to intentionally make Akira feel uncomfortable. She does this so often that her teasing and {{Stripperific}} outfits become less effective on him due to overexposure even though he still responds to other women, much to her annoyance.
* MysteriousBacker: What Alpha's exact goals with her request to Akira are is a mystery, or rather a JigSawPuzzlePlot that gets hinted at from time to time.
* NoBiologicalSex: Alpha prefers to be referred to as a woman, but she has no real sex as an ArtificialIntelligence and can freely change the way she appears to Akira as she pleases.
* OhCrap: Two notable cases. One where Akira kills several men to save their would-be victims, but Alpha can tell that it was really an excuse to kill the men rather than for the good of the act. That "extreme hatred" has her tense enough to silently realize she should try to avoid Akira ever pointing it her way. The latter is when [[spoiler:Akira is EatenAlive by the giant snake, as it was a scenario she couldn't help him in whatsoever and it seemed like he was truly dead.]]
* OOCIsSeriousBusiness: Generally an InvokedTrope with her expression being like a barometer of how much danger Akira is in he can check. But even given that, there's [[spoiler:Alpha absolutely panicking when Yanigisawa surprise attacks Akira and starts interrogating him.]]
* ParentalSubstitute: In some ways for Akira. She even grounds him at times. Akira has her do things for him in ways a parent might pretty often, a bit of a MundaneUtility considering how advanced she is. Like homeschooling.
* PerceptionFilter: Alpha is only perceptible who have brains compatible with the Old World domain, and even then she can control who sees her, rendering her invisible and inaudible to everyone but Akira unless she wants to serve as a distraction. She can also insert these filters on Akira's vision, granting him a degree of [[SuperSenses telescopic vision]] as well as what amounts to a heads-up display.
* PlayingBothSides: [[spoiler:Since the two Alphas are splitting their support between Akira and Katsuya, Katsuya becoming TheRival to Akira means she’s doing this as they clash.]]
* ProudBeauty: She's very proud of her good looks, which she calculated from data to be appealing to as many people as possible, and constantly flaunts herself to Akira while comparing other women to her as a matter of measurement.
* QuitYourWhining: She sometimes tells Akira this but she’s (usually) more diplomatic, or teasing. She also tells Sheryl this in a dream one time.
* SceneryDissonance: InvokedTrope with her fancy outfits to elicit reactions from those who can see her (since most can’t). Especially noticeable in the manga, where every other panel has her appearing as this.
* ServileSnarker: She's officially subservient to Akira as per their contract, but she knows how much he relies on her and is prone to snarking at him for a quick laugh.
* SesquipedalianLoquaciousness: Her explanations to [[BookDumb Akira]] can be filled with TechnoBabble and complicated terminology that he doesn't understand. He frequently has to ask her to explain it more slowly and with simpler words for him to wrap his head around some of the concepts she's trying to explain to him.
* ShamelessFanserviceGirl: She's prone to appearing in the nude just to get a rise of Akira. But this also served a purpose before she formed a contract with him, as appearing naked would be the quickest way to elicit a reaction from those able to detect her.
* SkeletonKey: She seems to have a digital one in the form of a symbol, that she's shown using when hacking machines and compelling A.I.s to obey her commands.
* SmugSmiler: Often has a supernaturally perfect and beautiful looking smile (considering it’s calculated to be whatever will be best to manipulate Akira at a given time). And she positively radiates smug.
* TheTease: While she generally likes teasing Akira, sexual teasing makes up a good portion of that.
* {{Telepathy}}: Akira is able to communicate with Alpha telepathically through their contract, which alleviates a lot of the problems regarding Akira talking to thin air, though people still wonder why he turns to empty space.
* TheOnlyWayTheyWillLearn: Alpha uses this many times as part of teaching Akira, largely due to him overly depending on her to answer every question he has.
* TooImportantToWalk: While she's able to "stand" on the ground, she rarely walks around, instead floating around Akira to emphasize her otherworldly presence.
* ToxicFriendInfluence: Alpha offers her assistance to Akira in exchange for helping her achieve her goals. It's blatantly clear that she's preying on Akira's naivety and sense of gratitude to manipulate him, but it's unclear what exactly she wants from the relic she wants him to track down. She's also frustrated by his growing number of relationships, as it means that she can't manipulate him as easily.
* UnlimitedWardrobe: Alpha is able to freely change her appearance at will, resulting in her putting on a variety of outfits throughout the story. Though she's just as prone to going in the nude just to get a rise out of Akira.
* TheVamp: She continually flirts with Akira and tries to entice him with her body to control him, even saying that he'd be able to touch her once he retrieves the relic she needs. Akira is more embarrassed by this than anything, but while he rejects her advances, it's clear that he's not entirely immune to them.
* VirtualSidekick: She acts as this for Akira, interfacing with technology for him, using AugmentedReality to assist his aim, and giving him training simulations to improve his skills. She can also directly control his PoweredArmor to allow him to perform feats that he'd never be able to on his own.
* WhiteVoidRoom: Akira has dreams of her in one of these. They mainly serve as ways to tease and further the MythArc of the series. The first dream has her recounting a log of the hunters she helped before him.
* XRayVision: Alpha is able to see detect others through walls and impart this onto Akira, letting him see the silhouettes of others hiding behind obstacles.
[[quoteright:350:https://static.tvtropes.org/pmwiki/pub/images/alpha_rebuild_world_2.png]]
!!'''Voiced by:''' Creator/YurikaKubo
->''"Well? How is my supporting? You can't help but trust me now, can you?! Don't be shy, shower me with gratitude!"''
An AI that Akira encounters while exploring the Kuzusuhara Ruins. She offers him a contract for her to help him become a great hunter and escape the slums in exchange for helping her find a specific relic, training and supporting him for this purpose.
----
* AchievementsInIgnorance: Invoked. Alpha doesn't actually expect a whole lot from Akira. As a random slum kid with no outstanding talents aside from his ability to interact with her, he normally wouldn't make it far at all without her help. But she doesn't tell him this, as planting that expectation in his mind would only drag him down. By letting him believe what she thought was impossible for him is possible, she thinks he may be able to prove her expectations wrong.
* AFoolAndHisNewMoneyAreSoonParted: Discussed. Akira is dumbstruck when he gets 200,000 aurum for the first time, the most money he's ever had in his life at this point. He's baffled when Alpha refers to it as "spare change", and she advises him to invest it in important things like shelter and new equipment rather than hoarding it or splurging it.
* AFormYouAreComfortableWith: Alpha produced her current form based on Akira's own preferences in order to make herself more likable to him. She's also constantly changing clothes to see what appeals most to him as part of her efforts to keep him completely dependent on her.
* ArtificialIntelligence: She's a disembodied artificial intelligence from the Old World able to interact with Akira by directly beaming sensory information into his brain via augmented reality.
* AttentionWhore: She basically demands all of Akira's attention when he's not fighting, demeaning other girls and getting huffy when Akira reacts to them more than he does to her.
* AugmentedReality: Alpha is able to interact with Akira by sending sensory information directly to his brain on top of his perception of reality. This lets him see her, hear her, and "feel" her touching him despite her being completely intangible.
* AutomatedAutomobiles: Once Akira gets his own car, Alpha is able to take the wheel either by controlling his suit or hacking into the control module and remotely driving it from there so he can focus on aiming.
* BadassBiker: Motorcycle operation is one of her many specialties. She is able to operate a high-end motorcycle by controlling Akira's augmented suit, making it appear as though he'd driven one his entire life between the acrobatics she performs and the speeds she drives at.
* BareFistedMonk: By controlling Akira's augmented suit, she can give him hand-to-hand combat lessons simulating what it's like to fight a real opponent. Even with the augmented suit's abilities, Akira handily gets his butt kicked and would have gotten his head smashed like a watermelon from an axe kick of hers had she been real.
* BuxomBeautyStandard: She can change her appearance at will and use it to give herself impossibly large breasts, and outfits that emphasize them.
* CarFu: Alpha is sure to hack the control unit of any vehicle that Akira gets, and is more than willing to deliver a FoeTossingCharge to a yarata scorpion with his bike, or send mercenaries into another world with his car.
* CatchPhrase: "Leave it to me/Leave the rest to me."
* CombatPragmatist: [[spoiler:Insisting on Akira not shooting the head of the pickpocket Alna, specifically to invoke DeathIsDramatic and have Katsuya stay and talk to her before acting as a diversion for the pursuing mercenaries. She reasoned that if he'd killed Alna immediately, Katsuya would chase Akira instead.]]
* DoorStopper: As part of the contract writing process, Alpha says that the instruction manual would take more than ''120 years'' to recite. She uses this as justification to skip over it the way many online programs let you check off instead of reading the painfully dense terms and conditions, leaving Akira in the dark about what exactly he's agreeing to.
* DrivesLikeCrazy: Justified, considering she’s often doing a HighSpeedMissileDodge. Due to this, Akira often needs to use one of his PoweredArmor arms simply to stand steady when she drives him. Togami riding as a passenger at one point, wasn’t so fortunate, and had to use all his limbs just to keep from being thrown off (eventually falling anyway).
* DullEyesOfUnhappiness: In contrast to her lively persona, Alpha sports these in the manga when the reader is made privy to her thoughts, showing how she's scheming and actively trying to manipulate Akira.
* EvilMentor: Alpha constantly supports Akira with training drills, advice, and in-combat support to make him the best hunter he can possibly be. But it's also clear that she hasn't told him everything about the contract they've made and he doesn't know the details of what she's planning for him.
* ExpositionFairy: Her scanning abilities and well of knowledge means that she's often the one to point out things to Akira (and the reader).
* FamedInStory: She's a famous urban legend told among hunters exploring the Kuzusuhara Ruins known as the "Tempting Specter".
* FunSize: Her DigitalAvatar she uses on Akira’s info terminal. Seen more often in the manga.
* TheGadfly: She enjoys needling and flirting with Akira just to get a rise out of him, sometimes going nude just to see how he reacts. Despite showing jealousy when Akira pays attention to other women, she also asks if Shizuka is his type and creates computer-generated images of Sara and Elena naked to gauge his reaction.
* HollywoodHacking: As an AI from the Old World, Alpha is able to easily hack into technology to pull out information. She's also able to do this to the various {{Cyborg}} monsters prowling the wastelands to make them see what she wants them to see or scramble their targeting systems.
* HomefieldAdvantage: Her scanning and detection abilities work best in the Kuzusuhara Ruins that Akira met her in. Outside of them, her abilities are reduced, especially when she's underground and in another ruin she's unfamiliar with.
* HypercompetentSidekick: Alpha may be Akira's VirtualSidekick, but he's knows that he never would have gotten as far as he has without her constant combat support, training, and information gathering. So despite annoying him with her flirting, he has absolute faith in her. She's just as aware of this, continually reminds him of how essential she is to his success to manipulate him to her own ends.
* IgnoredExpert: When Akira first meets Alpha, he's initially wary of her and too impatient to follow her instructions to a T, resulting in him getting injured on multiple occasions. From then on, he begins following her instructions to the letter to protect himself, which also twists him around her little finger.
* ImpossibleHourglassFigure: While there are other busty girls in the slum city, Alpha stands out as being the most curvaceous character in the story, with enormous boobs, a tiny waist, and wide hips. {{Justified|Trope}} by her being an AI able to freely change her appearance via AugmentedReality.
* ImprobableAimingSkills: Alpha's targeting algorithms make it possible for Akira to aim accurately even in the worst of circumstances, like in near-pitch black darkness or while driving a car or a motorcycle. Her aiming support is what makes it possible for Akira to take down monsters far more easily than he'd normally be able to, with a level of accuracy described by the narrative as "god-like". That said, she's not infallible, and she's also limited by Akira's own body and ability to draw a bead.
* IndyPloy: Alpha makes one to make up for the fact that Akira is a BadLiar. When Shirou determines that Akira has a powerful backer, he guesses that it’s a rival company to Sakashita, and Alpha teases Akira aggressively to make him react as if Shirou guessed correctly. To keep him from discovering her existence.
* INeedYouStronger: The reason for her training and supporting Akira. She needs a strong hunter with absolute faith in her to brave the ruins and retrieve the relic she needs. Since Akira is the one who formed a contract with, she's trying to make him that hunter to achieve her goals.
* {{Intangibility}}: Due to her presence being a mere AugmentedReality avatar. Akira asks her why she doesn't walk through people in a crowd, prompting her to do so; the sight gives him nausea.
* InvisibleToNormals: Alpha can only be perceived by a select few individuals whose brains are compatible with the Old World internet like Akira's, or with specialized equipment. In addition, she can render herself invisible if she so chooses through her PerceptionFilter abilities.
* LadyAndKnight: She's a classic Dark Lady to Akira's Dark Knight.
* LetUsNeverSpeakOfThisAgain: Akira mulling buying her a RobotGirl body makes her angry and insist he never bring it up.
* ALighterShadeOfBlack: While Alpha is beyond the shadow of a doubt a ManipulativeBitch, comparing her to the willingness of other A.I.s like Tsubaki and Alice to slaughter people without a second thought, she comes off a bit better.
* LivingLieDetector: Akira comes to depend on her ability to read people this way by monitoring their vitals and facial expressions. Cyborgs are a bit of a blind spot for her, though, which she’ll point out.
* ManipulativeBitch:
** She tries to manipulate Akira and make him as reliant on her as possible so he'll do everything she says as part of her scheme to get that relic she needs. Her asides in the novels and manga show her deliberating how best to control him, constantly trying new ways of making herself the most important person in his life.
** She is particularly wary of Akira getting too attached to any other humans, to the point she actually gives Akira some orders for the express purpose of disrupting his relationships (such as asking him to run away from Katsuya in order to create a rift with Elena and Sara from them one-sidedly hearing Katsuya’s side of their argument.)
* MasterSwordswoman: Akira's sword movements when under her control are invariably described like this.
* MissionControl: Alpha’s support mostly consists of highly advanced versions of this combined with AugmentedReality and then PeoplePuppets aid..
* MsExposition: Alpha possesses a vast amount of information on nearly any topic, from weapons, to combat techniques, to vehicle operation. As such, she's usually the one expositing to Akira (and the reader) about a given topic.
* MsFanservice: Alpha has a habit of appearing in various fanservice-y outfits, sometimes to inspire Akira or get him to be more active, and other times just for her own "fun". Best exemplified with appearing all but naked in a garter belt and tie as part of a "strip clothes off with each right answer" game for a quiz, which she does to intentionally make Akira feel uncomfortable. She does this so often that her teasing and {{Stripperific}} outfits become less effective on him due to overexposure even though he still responds to other women, much to her annoyance.
* MysteriousBacker: What Alpha's exact goals with her request to Akira are is a mystery, or rather a JigSawPuzzlePlot that gets hinted at from time to time.
* NoBiologicalSex: Alpha prefers to be referred to as a woman, but she has no real sex as an ArtificialIntelligence and can freely change the way she appears to Akira as she pleases.
* OhCrap: Two notable cases. One where Akira kills several men to save their would-be victims, but Alpha can tell that it was really an excuse to kill the men rather than for the good of the act. That "extreme hatred" has her tense enough to silently realize she should try to avoid Akira ever pointing it her way. The latter is when [[spoiler:Akira is EatenAlive by the giant snake, as it was a scenario she couldn't help him in whatsoever and it seemed like he was truly dead.]]
* OOCIsSeriousBusiness: Generally an InvokedTrope with her expression being like a barometer of how much danger Akira is in he can check. But even given that, there's [[spoiler:Alpha absolutely panicking when Yanigisawa surprise attacks Akira and starts interrogating him.]]
* ParentalSubstitute: In some ways for Akira. She even grounds him at times. Akira has her do things for him in ways a parent might pretty often, a bit of a MundaneUtility considering how advanced she is. Like homeschooling.
* PerceptionFilter: Alpha is only perceptible who have brains compatible with the Old World domain, and even then she can control who sees her, rendering her invisible and inaudible to everyone but Akira unless she wants to serve as a distraction. She can also insert these filters on Akira's vision, granting him a degree of [[SuperSenses telescopic vision]] as well as what amounts to a heads-up display.
* PlayingBothSides: [[spoiler:Since the two Alphas are splitting their support between Akira and Katsuya, Katsuya becoming TheRival to Akira means she’s doing this as they clash.]]
* ProudBeauty: She's very proud of her good looks, which she calculated from data to be appealing to as many people as possible, and constantly flaunts herself to Akira while comparing other women to her as a matter of measurement.
* QuitYourWhining: She sometimes tells Akira this but she’s (usually) more diplomatic, or teasing. She also tells Sheryl this in a dream one time.
* SceneryDissonance: InvokedTrope with her fancy outfits to elicit reactions from those who can see her (since most can’t). Especially noticeable in the manga, where every other panel has her appearing as this.
* ServileSnarker: She's officially subservient to Akira as per their contract, but she knows how much he relies on her and is prone to snarking at him for a quick laugh.
* SesquipedalianLoquaciousness: Her explanations to [[BookDumb Akira]] can be filled with TechnoBabble and complicated terminology that he doesn't understand. He frequently has to ask her to explain it more slowly and with simpler words for him to wrap his head around some of the concepts she's trying to explain to him.
* ShamelessFanserviceGirl: She's prone to appearing in the nude just to get a rise of Akira. But this also served a purpose before she formed a contract with him, as appearing naked would be the quickest way to elicit a reaction from those able to detect her.
* SkeletonKey: She seems to have a digital one in the form of a symbol, that she's shown using when hacking machines and compelling A.I.s to obey her commands.
* SmugSmiler: Often has a supernaturally perfect and beautiful looking smile (considering it’s calculated to be whatever will be best to manipulate Akira at a given time). And she positively radiates smug.
* TheTease: While she generally likes teasing Akira, sexual teasing makes up a good portion of that.
* {{Telepathy}}: Akira is able to communicate with Alpha telepathically through their contract, which alleviates a lot of the problems regarding Akira talking to thin air, though people still wonder why he turns to empty space.
* TheOnlyWayTheyWillLearn: Alpha uses this many times as part of teaching Akira, largely due to him overly depending on her to answer every question he has.
* TooImportantToWalk: While she's able to "stand" on the ground, she rarely walks around, instead floating around Akira to emphasize her otherworldly presence.
* ToxicFriendInfluence: Alpha offers her assistance to Akira in exchange for helping her achieve her goals. It's blatantly clear that she's preying on Akira's naivety and sense of gratitude to manipulate him, but it's unclear what exactly she wants from the relic she wants him to track down. She's also frustrated by his growing number of relationships, as it means that she can't manipulate him as easily.
* UnlimitedWardrobe: Alpha is able to freely change her appearance at will, resulting in her putting on a variety of outfits throughout the story. Though she's just as prone to going in the nude just to get a rise out of Akira.
* TheVamp: She continually flirts with Akira and tries to entice him with her body to control him, even saying that he'd be able to touch her once he retrieves the relic she needs. Akira is more embarrassed by this than anything, but while he rejects her advances, it's clear that he's not entirely immune to them.
* VirtualSidekick: She acts as this for Akira, interfacing with technology for him, using AugmentedReality to assist his aim, and giving him training simulations to improve his skills. She can also directly control his PoweredArmor to allow him to perform feats that he'd never be able to on his own.
* WhiteVoidRoom: Akira has dreams of her in one of these. They mainly serve as ways to tease and further the MythArc of the series. The first dream has her recounting a log of the hunters she helped before him.
* XRayVision: Alpha is able to see detect others through walls and impart this onto Akira, letting him see the silhouettes of others hiding behind obstacles.
