Yaoyorozu

Biodata

Background / History

Yaoyorozu comes from a wealthy family whose Setagaya estate resembles a European manor. The grounds are large enough that visiting classmates enter by tour cart, and the household employs maids and a team of chefs. She offers the estate’s auditorium and extensive study materials for a class tutoring session 221 222 224.

Before high school, she had few friends to talk to while concentrating on admission to U.A. She enters the Hero Course through recommendation, places first in the opening Quirk Apprehension Test, and later ranks first academically in her class. Her extensive reading also supports Creation, which requires knowledge of the materials she produces 19 221 391.

Appearance

Yaoyorozu is tall, with long, slender legs and fair, exceptionally smooth hands 19 74.

• School attire: Wears a neatly arranged U.A. uniform; she wears light makeup when accompanying Jilan to the Student Council meeting 74.
• Hero costume: Leaves areas of skin exposed for producing objects with Creation 44 83.
• Formal clothing: Attends a concert outing in an intricately patterned kimono, pinned-up hair, and wooden clogs—an outfit her mother considers simple 157.
• Quirk-related changes: Extensive creation consumes her body fat and can noticeably alter her figure, leaving previously fitted clothing loose 107 396.

Personality

Yaoyorozu is courteous, serious about her responsibilities, and comfortable with formal etiquette. She bows to thank Ojiro for rescuing her group and reprimands Aoyama for treating an earthquake-rescue exercise like a picnic. Although disappointed not to become class representative herself, she increasingly accepts Jilan’s leadership after seeing the practical effects of his preparations 31 44 75 83.

Her sheltered upbringing leaves her unfamiliar with some ordinary social experiences. She expresses interest in visiting a fast-food restaurant with classmates, readily trusts praise, and believes Kaminari and Mineta’s fabricated instructions about cheerleading uniforms. She is not endlessly permissive, however: remembering Mineta’s earlier peeping, she agrees to exclude him from the study gathering at her home 28 74 124 222.

She is generous with both her resources and her abilities, offering tutoring space and creating food for a hungry classmate despite her own depleted fat reserves. She is also willing to confront weaknesses in herself: after meeting Melissa, she withdraws from social activities to study creativity and invention rather than remain satisfied with reproducing existing objects 221 375 396.

Yaoyorozu is easily embarrassed by romantic teasing and admits to fearing ghosts. Nevertheless, concern for Jilan can override that fear, prompting her to rush toward an apparent supernatural threat when she believes he is in danger 83 406 407.

Abilities & Skills

Creation

Creation converts Yaoyorozu’s body fat into objects whose structures she understands. Its versatility depends heavily on her knowledge and choice of equipment 77 108 221 396.

• Defensive equipment: Produces insulating sheets, insulating cloth, and a lightning rod to protect allies from Kaminari’s indiscriminate electricity 44 119.
• Weapons and restraints: Creates an iron rod, a cannon, imitation capture bandages, and a catapult 105 107 229.
• Rescue and mobility tools: Makes an air cushion for a third-floor evacuation and roller skates during the Sports Festival race 83 108.
• Electronics: Creates camera-equipped remote-control cars, mobile phones, and a small computer 31 44 333 398.
• Food and clothing: Produces chocolate and the Class 1-A girls’ cheerleading outfits 124 396.
• Knowledge requirement: Must understand the structure of the materials involved; examining unfamiliar equipment helps her assess whether she can reproduce it 221 347.
• Resource cost: Larger creations consume more fat, calories, and stamina. Making a cannon during a long-distance race leaves her winded, while insufficient reserves during the forest trek cause pronounced physical changes 107 396.
• External interference: Her remote-controlled devices can lose their radio connection to electrical interference. Aizawa’s Erasure can prevent her from activating Creation 31 229.

Tactical Planning

Yaoyorozu uses combinations of equipment to control an encounter rather than relying on a single weapon.

• Seals a training base with an iron plate, coordinates Mineta’s wall-climbing route, and deploys camera cars to locate and confuse opponents 31.
• Protects Todoroki’s cavalry team from electricity while helping defend its headband against Dark Shadow 119 120.
• Exploits interruptions in Aizawa’s Erasure with concealment, decoys, a flash-producing nesting doll, and heat-activated restraints 229.
• Recognizes electrical signal interference during the USJ attack and attempts to contact police once reception returns 44.

Technical Knowledge & Programming

Her knowledge extends beyond manufacturing objects to modifying their operation.

• Studies the structure of Melissa’s inventions to determine whether she can reproduce them 347.
• Disassembles an Earth Beast’s control chip and uses a self-created computer to replace its attack behavior with pathfinding 398.
• Reprograms two additional Earth Beasts with tracking instructions, allowing the class to use the creatures as transportation 398.
• Later controls those three Earth Beasts during the villains’ forest attack to help other students 415.

Leadership & Academic Ability

Yaoyorozu serves as one of Class 1-A’s vice representatives and is entrusted with external affairs by Jilan 31 74.

• Represents the class at the Sports Festival meeting and negotiates its participation in preparation work 75 77.
• Assigns jobs according to classmates’ abilities, selecting Shoji and Kirishima for heavy lifting based on their strength-test results 78.
• Helps arrange a makeup-test exemption as an incentive for students assisting with preparations 78.
• Offers academic assistance and study materials to classmates before the final exams 221 222.

Training & Development

• Activation practice: At the forest camp, repeatedly eats, converts calories into fat, and creates objects to train her activation speed 401.
• Situational judgment: Jilan argues that choosing useful creations and understanding unfamiliar objects would benefit her more than repeatedly producing nesting dolls 401.
• Inventive ambition: After I-Island, identifies original invention—not imitation—as her next goal. She studies books on imagination and creativity and considers applying to visit Detnerat 375.

Equipment / Items

• Mosaic Generator — A device given to her by her mother. Worn anywhere on her body, it generates a visual mosaic while she uses Creation, preventing exposure 83.
• Hero costume — Provides exposed skin from which she can produce equipment 44 83.
• Flash-producing nesting doll — Opens in midair to release an intense flash; used to disrupt Aizawa’s vision during the practical exam 229.
• Memory-alloy capture bandages — Imitations of Aizawa’s restraints that contract when heated by Todoroki’s fire 229.
• Tracker — Displays Himiko Toga’s location and supports the students’ preparations to rescue Tokoyami 426.

Story Role / Major Arcs

Early Class Training and the USJ Attack

• Partners with Mineta for indoor combat training and defeats Kaminari and Jiro through fortification, reconnaissance, and misdirection 22 31.
• Praises Iida for faithfully fulfilling the villain’s role during the exercise review, moving him to tears 31.
• During the USJ attack, creates insulation so Kaminari can discharge electricity without striking his allies. Ojiro intervenes when a surviving attacker takes Kaminari hostage 44.
• Recognizes that Jilan’s golden light originates near the flood zone and runs toward it, fearing something has happened to him 44.

Sports Festival Preparations

• Accompanies Jilan to the Student Council meeting, where he presents her as Class A’s decision-making “brains” 74 75.
• Agrees that the Hero Course should voluntarily help prepare the festival, unaware that Erina Nakiri secretly records her agreement 77.
• Develops a friendship with Nakiri, receives advice on class management and diet, and announces the resulting work assignments to Class A 78 79.

Sports Festival Competition

Work-Study and Final Exams

• Films a show with Itsuka Kendo under Uwabami’s supervision. Repeated photography leaves her unconsciously adopting a hand-on-hip pose 178 196.
• Visits Oumagadoki Zoo, attends its fireside celebration, and asks Jilan why the circus story’s Mad Hatter did not end up with Alice. Snake Woman subsequently teases her about her interest in him 204.
• Hosts classmates at her estate for exam preparation 221 222.
• Passes the practical exam with Todoroki by trapping and handcuffing Aizawa 229.

I-Island and Summer Study

• Gives Jilan a phone she has created, with her own number already entered 333.
• Helps the students infiltrate the secured building, tying up an unconscious guard while Jilan organizes their approach to the control room 345.
• Examines Melissa’s inventions but receives no additional support equipment, as Melissa has nothing suitable for Creation 347 348.
• Returns from I-Island dissatisfied with her lack of original inventions and devotes a week to studying creativity 375.
• Encounters Jilan with Fran, initially misunderstands their relationship, and hears his explanation of how he found her aboard the Voyager. She invites him to stay at her home, but he declines because he plans to travel with Fran 376 377.

Forest Camp and Tokoyami Rescue Preparations

• Reprograms Earth Beasts into transportation, reducing the class’s remaining journey to the training base 398.
• Pairs with Jilan for the test of courage. Poisonous purple mist causes hallucinations, which Jilan clears with Hamon; he then asks her to make gas masks and help warn the others 406 407.
• Returns with three controlled Earth Beasts to assist during the attack 415.
• Is stabbed by Himiko Toga, who has disguised herself as Jiro, and used as leverage against Aizawa. Jilan treats her afterward 420.
• Confronts Jilan about risking his own body while carefully protecting everyone else 425.
• Brings the tracker showing Toga’s location and joins the students preparing to rescue the abducted Tokoyami 426.

Relationships

• Jilan Jiyu — Class representative, teammate, and close friend. Her initial disappointment over losing the election develops into trust in his judgment. Classmates repeatedly tease her about romantic interest, and she later explicitly tells him that his reckless fighting worries her 31 44 74 83 204 425.
• Erina Nakiri — Older student and friend. Despite Jilan’s warning that Nakiri might target the Hero Course, Yaoyorozu comes to appreciate her advice, tailored meal plan, and invitation to visit her home 74 77 78.
• Shoto Todoroki — Cavalry-battle teammate and practical-exam partner. Their combined planning, Creation, ice, and fire allow them to defeat Aizawa 114 119 229.
• Melissa — Technical inspiration. Melissa’s inventions lead Yaoyorozu to reassess her own knowledge and pursue original design 347 375.
• Kyoka Jiro, Ochaco Uraraka, and Tsuyu Asui — Friends and classmates with whom she attends a concert. She later reassures Uraraka that they are all her friends 157 391.
• Itsuka Kendo — Work-study companion who teases her about her cheerful phone conversation with Jilan 178 206.
• Snake Woman — Pro Hero she interns with and a confidante during the zoo celebration; teases her about Jilan and discusses private feelings with her 204 376.
• Minoru Mineta and Denki Kaminari — Classmates whose cheerleading deception exploits her trust. Mineta is also her successful indoor-training partner, though his later peeping costs him an invitation to her home 31 124 222.

Notable Quotes

“Uraraka, I was just like you before high school. I didn't have many friends to talk to because I was trying to get into U.A. But now, we're all your friends.” 391

“Actually, I worry about you too.” 425