Narumi Ryōriki Wiki

Negate

量力 成美  •  Ryōriki Narumi

"Don't make it weird. I was already standing here." Narumi, after catching a classmate mid-fall and immediately pretending she had not.

Ryōriki Narumi (量力 成美), known by the hero name Negate, is a student in Class 1-A at U.A. High School and a former child actress. Guarded and dry, she hides behind an air of boredom that conceals how sharply she reads the people around her, and how much she actually cares about them. Her Quirk, Mass Inversion, gives her flight, enhanced strength, and exceptional durability, potent enough that she spends more effort restraining it than using it.

Appearance / 外見

Narumi is a very beautiful, petite girl who stands 154 cm tall. She has fair skin, soft facial features, naturally full lips, and pale blue eyes. Her expression usually looks bored or mildly unimpressed. She has two beauty marks, one beneath her eye and another above the corner of her mouth. Her light ash-brown hair is cut into a short bob with bangs and longer pieces framing her face.

Narumi has a pear-shaped build with a small bust, narrow upper body, wider hips, and toned legs. Her figure is feminine but athletic due to regular training. She's aware that she is attractive and understands that people often make assumptions about her based on her appearance. Although she doesn't rely on her looks, she's willing to use those assumptions to her advantage when it benefits her.

Personality / 性格

Narumi has a way of looking bored even when she is paying attention. She simply does not see a reason to look interested for everyone else's benefit. She is selective about who she talks to and tends to watch people before joining a conversation. Her answers can be quiet or blunt, which sometimes makes her seem rude when she is actually being agreeable or neutral. Narumi doesn't go out of her way to make people comfortable around her. If someone decides she is aloof or mean because she did not smile enough, in her mind, that's their problem. Some of her boredom is real. She has very little patience for winded explanations, forced enthusiasm, or people who turn every situation into a performance. She gets annoyed when someone talks simply to hear themselves and has no sympathy for people who make their bad mood everyone else's responsibility.

The rest of it is a defense. Looking bored gives people less to work with. It's harder to tell when she is nervous, embarrassed, hurt, or more interested than she wants to admit. If something gets under her skin, her first instinct is usually to flatten her expression and act as though she could not care less. It doesn't always work, though.

Narumi is still a teenager. She's not nearly as unreadable as she believes she is. When she feels exposed, she gets irritable. She goes quiet, rolls her eyes, changes the subject too quickly, or starts being difficult for no real reason. If someone embarrasses her, she may scoff and act like they're the embarrassing one. When she feels cornered, her attitude gets worse. She especially dislikes the feeling that someone is watching her too closely.

Growing up around cameras made her aware of every small thing people notice, like posture, tone, facial expression, clothing, where she puts her hands, or whether she smiles at the right moment. People often decided what kind of girl she was before she had the chance to talk to them. Because of that, attention can make her uneasy even if the attention is positive. Compliments are complicated. Casual praise is easy enough to brush off, but anything too sincere or observant can leave her feeling exposed. Concern can bother her for the same reason. She doesn't always know what to do when someone looks past the version of herself she intended them to see.

Her years in acting and modeling taught her how to become charming on command. When she needs to, she can straighten her posture, soften her voice, and smile as though she's genuinely pleased to be there. Cameras bring those habits back almost immediately. She becomes smoother, more polite, and much more careful about what shows on her face. That version of Narumi is not fake, exactly. It's simply "edited".

She's feminine. She enjoys makeup, skincare, pretty clothes, jewelry, soft colors, and cute decorations. She likes knowing what suits her and takes pride in her appearance. She doesn't pretend to be unaware that she is attractive. What she hates is the assumption that a pretty, feminine girl must only be that. Adults spent much of her childhood praising her when she looked sweet, behaved in a more digestible way, and allowed herself to be shaped into something easy to market. Kiku did not make Narumi feminine, but she did teach her how useful that femininity could be to other people. That history left Narumi sensitive to the way people describe her. Being called "princess" bothers her more than most teasing because it usually comes with assumptions attached. Fragile. Spoiled. Sheltered. Decorative. Someone who should stand there, look nice, and let other people handle everything important.

She would rather be praised for doing something worthwhile. She wants people to notice how quickly she understood a problem, how well she handled herself under pressure, or what she managed to accomplish. Compliments about her appearance aren't always unwelcome, but they mean less to her when beauty is the only thing someone seems interested in.

That being said, Narumi isn't above taking advantage of those assumptions. If someone expects her to be sweet and harmless, she may let them. She knows how to widen her eyes, soften her voice, and offer an innocent explanation that is technically possible, even if no one in the room believes it. She is often at her most convincing when she is lying through her teeth.

Narumi has a petty streak that becomes obvious once she is annoyed. She rolls her eyes without trying to hide it, scoffs under her breath, and responds to things she finds unpleasant with a flat "ew." Her insults are rarely elaborate. Usually, one short comment is enough. She has the least patience for arrogant, invasive, or condescending people. At first, she may ignore them. Narumi does not like wasting energy on someone who is clearly trying to provoke her. If they keep pushing, however, she can become cruel in a very casual way. She knows how to find the one thing a person is insecure about and mention it as though the thought barely occurred to her. Not all of this is some carefully planned strategy. Sometimes, she is just being a brat.

She can become competitive over things that don't matter, sulk when she loses, and refuse to admit when someone else has made a good point. If irritating someone produces a funny reaction, she may keep doing it long after the joke should have ended. She will deny something everyone watched her do and then look offended that anyone would accuse her. Narumi is clever, but she is not an untouchable social mastermind. Sometimes her excuse is terrible. Sometimes she gets caught. Sometimes she keeps arguing anyway because admitting defeat would be worse.

She gets along best with people who are friendly without crowding her. Straightforward kindness works better than fake niceness. She doesn't need someone to drag a dramatic confession of friendship out of her. She needs them to sit nearby, include her without making a production of it, and give her time to decide that their presence isn't a threat. Even after she likes someone, it may not be obvious. Narumi can accept invitations, join group activities, and willingly spend time with a person while looking almost completely neutral. People sometimes wonder whether she enjoys their company when she's already started thinking of them as a friend.

She notices more than she lets on. She can often tell when a person is hurt, frightened, overwhelmed, or pretending to be fine. She just doesn't announce that she noticed. Doing so would mean admitting she was paying attention. Narumi usually shows concern by making herself useful. She brings someone what they need, takes over a task they are struggling with, or stays close without asking them to explain themselves. During training, she keeps track of where her classmates are even when she looks distracted. If someone is vulnerable, she will quietly adjust her position so she can reach them faster. She does not like being thanked too earnestly afterward. A simple acknowledgment is fine. Anything more than that makes her shrug, complain, or insist she only helped because it was the easiest solution. Admitting that she was worried feels much more embarrassing than placing herself in danger.

Emergencies bring out a different side of her. Narumi is cautious with her Quirk and spends a great deal of time thinking about how much force she can safely use. That caution disappears quickly when someone else is in immediate danger. She may catch a falling person, step between someone and an attack, or throw herself into an unstable situation before she has fully considered what will happen to her. She finds that part of herself frustrating. Narumi likes to believe she's difficult to involve. Her instincts disagree.

Mass Inversion has shaped the way she thinks about her own body. She's small, but she knows how much power she's capable of producing. Flight feels natural to her. She enjoys the movement, the speed, and the freedom of being off the ground. The strength and durability that come with her Quirk are more difficult for her to trust. She isn't especially afraid of getting hurt herself. If anything, she's too willing to ignore her own safety. What frightens her is hurting someone else because she misjudged them. Even a restrained hit can be dangerous. Narumi knows that, and it makes her hesitate. Early in her training, she often operates far below what she is actually capable of. She prefers dodging, interception, rescue work, and controlled takedowns over direct exchanges of heavy blows. She would rather lose ground than discover too late that she used too much force.

When Narumi does stop holding back, it usually happens for one of two reasons: she has carefully judged the risk, or someone is in enough danger that she has stopped caring about caution.

Academically, she does best when a subject gives her something concrete to understand. Physics holds her attention more easily than most classes, especially anything involving movement, force, mass, acceleration, or mechanics. She's also interested in anatomy and the way different Quirks affect the human body. This knowledge isn't limited to schoolwork. Narumi uses it constantly when thinking about her own Quirk. She estimates weight, considers how an object might shift when lifted, and pays attention to how momentum changes her movement in the air. Understanding these mechanics makes her feel more in control. Mathematics and biology come naturally for similar reasons. They are structured, useful, and connected to things she can actually observe. Subjects built around memorizing procedures or repeating abstract information lose her much faster. English is easy for her because of her professional background and the amount of American media she has consumed. Unfortunately, easy does not always mean interesting. She has a bad habit of looking completely checked out before answering a question correctly.

Outside of school, Narumi likes action-heavy video games. Fast combat, difficult encounters, strong movement systems, and competitive multiplayer appeal to her most. She is much better than she initially lets on and becomes quietly insufferable when someone underestimates her. She may sit there with the same bored expression while destroying everyone else in the room. Narumi doesn't share this interest immediately. Gaming feels private to her. It belongs to family, free time, and parts of her childhood that were not meant for an audience. Inviting someone to play with her means more than she would ever admit.

Her humor also changes depending on how comfortable she feels. With acquaintances, she is dry and restrained. With close friends, she swears more, makes inappropriate comments, laughs when someone trips over their own feet, and keeps jokes going well past the point where they stopped being funny. She is more playful than she initially appears. She simply needs to feel safe enough to be stupid in front of someone.

As Narumi grows closer to people, her attachment becomes less accidental. She starts inviting them into her room, asking them to play games, or choosing the seat beside them without inventing an excuse. She still complains. She still deflects. She just stops pretending quite so hard that she doesn't care. Growth doesn't turn her into someone openly sentimental or endlessly warm. Narumi remains feminine, sharp-tongued, bratty, and intensely aware of how other people see her. She simply becomes more willing to let a few trusted people see past the expression she uses to keep everyone else at a distance.

At the end of the day, Narumi is a bratty teenage girl who learned early that being watched isn't the same as being known. Boredom is the face she puts on when she doesn't want anyone to see too much. Underneath it, she is intelligent, competitive, petty, observant, protective, and far more emotionally invested than she likes to admit.

Quirk & Abilities / 個性

Mass Inversion (Emitter): Narumi's Quirk lets her alter the effective mass properties of her own body. By placing all or part of herself into an inverted-mass state, she changes how her body responds to gravity, movement, physical loads, and impacts. It manifests as three linked abilities: self-propelled flight, enhanced strength, and exceptionally high durability. These are not separate powers but the same effect applied in different ways. She can spread Mass Inversion across her whole body for sustained flight or large physical tasks, or concentrate it in specific areas for focused work, reinforcing her arms before lifting, stabilizing her legs while bracing, or spreading it through her torso before catching something heavy. Through deliberate physical contact she can also channel a limited version of the effect into an object she is gripping, carrying, or supporting, though that use stays tied to continuous contact.

Overall Abilities

Narumi is a highly mobile aerial fighter who uses flight, speed, and durability to move quickly between offense, defense, and rescue. Rather than remaining in prolonged close combat, she relies on sudden dives, interceptions, grappling, and brief bursts of enhanced strength to disable opponents or protect others. Her greatest limitation is her own caution. Because she fears injuring someone or causing unnecessary destruction, she often restrains herself and operates well below the full potential of her Quirk.

Power5/5
Speed4/5
Technique2/5
Intelligence4/5
Cooperativeness3/5

Strength

Mass Inversion gives Narumi strength far beyond what her natural musculature would allow, letting her lift, carry, push, pull, strike, and restrain objects and opponents many times her own size. Her muscles still initiate every action; she has to grip, brace, strike, or move whatever she interacts with, and the Quirk supports that movement by changing how her body bears weight and resistance. Distributing the effect through her arms, shoulders, torso, and legs lets her carry a load across her whole body rather than only the muscles nearest her hands, so she can shift debris, move damaged vehicles, hold open blocked exits, or hold up a collapsing structure while others escape.

Her strength can be applied with fine control. She can raise her output gradually while testing how something responds, which lets her move fragile or unstable material without immediately breaking it, and by channeling Mass Inversion into an object she is physically supporting she can spread stress through its frame rather than concentrating it under her hands, keeping large or awkward structures more stable as she lifts, carries, or repositions them. The same strength makes her an effective carrier, able to move injured civilians or unconscious heroes on her own body without placing them into an altered state.

In combat her strikes carry tremendous power. Punches, kicks, shoulder checks, tackles, and aerial dives can break defenses or throw opponents across a battlefield, with the Quirk feeding force from the point of contact through her hips, torso, shoulders, and limbs. Flight adds versatility, letting her add a dive's speed to an attack, change her angle before contact, or reinforce a throw, and she can halt her own momentum after impact so a committed strike does not carry her past the target. She also uses strength defensively, catching a limb, holding someone in place, pulling a person out of danger, or blocking an object from reaching another.

Flight

Mass Inversion grants true self-propelled flight, with no wings or external equipment. Narumi rises, hovers, accelerates from a standstill, and travels freely by adjusting how her body responds to gravity and movement: an even distribution holds a hover, increasing the effect drives her upward, and shifting its balance through different parts of her body moves her horizontally, turns her, or changes her elevation. Concentrating it through her lower body pushes her up, shifting it toward her back and legs accelerates her forward, rebalancing it toward her front slows or stops her, and an uneven left-to-right spread lets her bank and turn, giving her precise three-dimensional mobility over difficult terrain, between damaged structures, and onto targets from above.

She tends to fly in bursts rather than at one steady speed, rising suddenly out of reach, crossing short distances quickly, or intercepting someone before dropping back into a controlled hover, and her ability to brake and redirect lets her commit to high-speed dives without being locked into a straight line. Flight is central to her rescue work, reaching trapped people from above, carrying them out of inaccessible areas, moving between separate sites without waiting for roads to clear, and lifting equipment or debris into position. In combat it lets her control range and angle, attacking from different heights and moving quickly between offense and defense. Her aerial style is direct and practical rather than graceful, favoring sharp altitude changes, sudden turns, and quick stops, and treating the air as an extension of the ground she can punch, grapple, carry, and brace from.

Durability

Mass Inversion also gives Narumi exceptional resistance to physical damage. While active, it reinforces her body from within rather than forming an external shield, supporting her skin, muscles, bones, joints, and organs as a single structure so she can survive actions that would otherwise place impossible stress on the human body. This durability underpins her other abilities, since her body must withstand the weight of what she lifts, the recoil of what she strikes, and the acceleration of her own flight, and she can concentrate the reinforcement where she needs it, hardening her arms before a block, her torso before an interception, or her legs before a heavy landing.

It lets her endure powerful blows, tackles, falls, and collisions, brace against a charging opponent, and put herself between an attack and another person, and it makes her a physical anchor able to hold position beneath falling debris or support a structure while pressure comes from another direction. When carrying someone she can shield them with her own body while passing through debris or absorbing an impact, which makes her especially valuable in unstable rescue environments she can enter and hold open while others withdraw. Her durability is visually understated, with no armor, hardened skin, or protective aura; she still looks like an ordinary compact teenager even while bearing tremendous weight or taking a major hit, which leads opponents to underestimate the true scale of her Quirk.

Fighting Style

Narumi arrived at U.A. relying mostly on mobility, durability, and straightforward strength, but as she trains she combines her power with karate and judo. Karate gives her structured punches, kicks, footwork, and controlled targeting, while judo lets her use grips, throws, sweeps, and an opponent's own momentum against them. The mix makes her more than a simple powerhouse: she can strike at range, close into a grapple, use her strength to control an opponent's posture, and finish a throw from the ground or the air, and her compact size works in her favor when opponents misjudge how hard she is to move or how much force she can generate from a short motion.

Genetics

Mass Inversion is a variation of her father Tatsuya's Quirk, Mass Absorption, which lets its user draw mass out of an object and add it to their own body for durability and strength. Where he pulls in external mass, Narumi instead inverts the mass properties of her own body.

Weaknesses

  • Bound to her own body. Mass Inversion works on Narumi herself. She cannot emit it as a projectile, spread it through open space, manipulate distant objects, or make a force field, and she cannot repel or move anything without physically reaching it. She can channel a limited version into an object she is deliberately gripping or supporting, but only through continuous direct contact; it cannot jump between objects, cross empty space, or persist once she lets go. Any environmental damage comes from her physical movement and strikes, not an emitted force.
  • Extreme energy cost. Continuously generating and regulating the inverted state is exhausting, and depending on her training and Quirk use she may need 20,000 to 35,000 calories a day. Ordinary meals cannot cover it, so she relies on a nutritionist-designed concentrated supplement of calories, protein, fats, and electrolytes on top of regular food. Harder tasks cost more, and because all three abilities draw on the same Quirk, depletion weakens her flight, strength, and durability at the same time.
  • Constant regulation. She must continuously match her output to her speed, load, support points, and intended movement. Too much and she overshoots, strikes too hard, or crushes what she is holding; too little and she fails a lift, hovers unsteadily, brakes short, or lands badly. She studies the weight, balance, and construction of common objects, and in rescues has to judge whether moving one piece will destabilize the rest, all of which gets harder when she is injured, frightened, distracted, or exhausted.
  • Reliant on concentration. Flight and heavier reinforcement require her to sustain the inverted state; a serious lapse can throw off her balance, direction, or grip, and if she is knocked unconscious the effect ends entirely, which is especially dangerous in the air or while supporting a load. Wind, rain, poor visibility, and tight spaces demand more control, and the Quirk does nothing about her need for oxygen, so extreme altitude still risks hypoxia.
  • Objects are not made indestructible. Supporting something does not stop it from breaking. A vehicle, beam, or damaged floor can still collapse around a bad grip, and channeling the effect in distributes stress but cannot repair existing damage. She has to find stable lifting points, account for cracks and weak materials, and keep hold until the load is transferred to solid ground or another hero, since losing contact drops her support instantly.
  • Not total immunity. Her durability is strongest against broad impacts it can spread across her body. Concentrated attacks such as blades, bullets, needles, and claws can overwhelm a small reinforced area, and repeated heavy hits build up faster than she recovers. It also does nothing against heat, electricity, extreme temperatures, poison, gas, illness, or suffocation, and it fades as she tires, so a strong enough attack can break through. Because she is used to shrugging off major impacts, she tends to underestimate her own injuries.
  • Combat inexperience and bad matchups. Her pre-U.A. training focused on safety and rescue, so early on she leans on mobility and simple strength, telegraphs and overcommits, and hesitates to use real force against opponents whose durability she cannot judge. Technique improves with karate and judo, but intangible, fluid, gaseous, or slime-like bodies may not respond to strikes or grappling, and highly elastic or regenerative opponents can soak up punishment, since her offense depends on meaningful physical contact.
  • Overuse. Pushing the Quirk too far drains her energy and blood sugar, bringing hunger, trembling, headache, nausea, weakness, and poor coordination, then disorientation and loss of control, and eventually hypoglycemia, collapse, and unconsciousness. Continuing past that point stresses her muscles, nerves, and organs and can lead to seizures, organ damage, coma, or death. The danger is worse because she tends to keep going for others long after she should stop.

Trivia / 豆知識

  • She prefers dogs to cats, though she still has a soft spot for cats. She has an older dog named Mami.
  • She hates seeing tabloids or articles about herself, which mostly rehash her departure from acting or trade in idle gossip, and she dislikes anything that reminds her of her acting past. Even so, she still uses Herogram, where she has almost 200,000 followers.
  • She is a naturally gifted singer with a soothing voice, but chooses not to sing in front of others, since she is not one to draw attention to herself.
  • She is good at video games, though her Quirk has cost her more than a few controllers over the years.
  • She keeps cloud decor, acrylic organizers, and soft blue bedding, and she is unbothered by bugs, snakes, and lizards, finding people's screaming more irritating than the animal itself.
  • Her Quirk's durability means she rarely flinches at being bitten or scratched, which adds to the unnerving calm with which she handles things others refuse to touch.

Notes & References / 出典

  • For a more in-depth character overview, see the full character document.
  • Thanks to crownandantler, whose work inspired me to explore the biology behind Narumi's Quirk in more depth.