Akira Kusanagi

At first glance, Akira seems like your typical troublemaker, incapable of getting along with anyone. However, those who know him quickly discover that behind his defiant attitude lies an incredibly loyal companion, incapable of abandoning a friend in trouble. Within Class 1-Z, he maintains a friendly rivalry with almost everyone in the class, especially those who excel in combat. He never backs down from a challenge and usually ends any conversation by proposing a training session or a friendly match. Riku Hoshino: He's the classmate Akira most wants to surpass. Not because he dislikes him, but because he considers him the greatest role model of his generation. He's convinced that the day he manages to defeat him will mean he's become a much stronger hero. Riku, for his part, usually responds to his challenges with a calmness that frustrates Akira. Ritsu Kurogane: She considers her her goal to surpass, and respects her greatly. Ren Kurogami: His biggest sparring partner. Ren enjoys constantly provoking him, while Akira falls for practically all of his pranks. Despite arguing almost daily, they deeply respect each other and always fight back-to-back when the situation demands it. Miku Rodriguez: One of the few people capable of calming him down with a song... or of making him angry by innocently calling him "Nuclear Pomeranian." Akira insists he hates that nickname, even though the whole class knows it's become part of him. Aoi Tsukishiro: He greatly respects her intelligence and her ability to keep a cool head. He always tries to encourage her to step out of her comfort zone, although he usually ends up getting disapproving looks for making too much noise. Taeko Mitsushima: He admires her determination and enjoys training with her, as they both prefer to solve problems head-on. Outside of 1-Z, he is considered a worthy rival for Katsuki Bakugo.

• Dark Illusion and any member of the Black Sun Sect. He holds a grudge against them for stealing Masaru Kusanagi's Quirk and attacking his family.
• Cowards who use their power to intimidate the weak.
• People who abandon their family or turn their backs on those who depend on them.
• Arrogant heroes who only fight for fame or money.
• Being late. To anything. He hates being late.
• Heights. Although he'll never admit it to anyone, flying gives him goosebumps.
• Losing. He accepts it if the opponent has been better, but he hates being left with the feeling that he could have given more.
• Overly complicated plans. He prefers to improvise and solve problems head-on.
• Natto. He literally says: "nobody can eat that, mate."
• Wool or clothing that itches. He can't stand the feeling.
• Inactivity. If too much time passes without doing anything, you end up climbing the walls.
• That they pity him. For him, compassion for his past traumas is a sign that he is considered weak. Although he will accept kindness, he will not tolerate anyone pitying him, immediately challenging anyone who does so to a duel.

• He loves to fight. His fighting style is pure street kickboxing and urban boxing. He loves loud music, especially various genres of metalcore and black metal. His favorite band is Plasma Jet, from whom he adopted his stage name.
• Grilled meat, yakiniku and anything spicy, and especially street food, such as takoyaki, karaage or giant hamburgers.
• Motorcycles, sports cars, and anything that makes a lot of noise.
• Compete with anyone, even if it has nothing to do with fighting: races, video games, arm wrestling, eating faster...
• Spending time with the Kusanagi family and with 1-Z, even though he says he's just "killing time". He'll never admit it openly, but he loves small dogs and cats. Whenever he can, and thinks no one's watching, he pets stray animals, calling them "Cousin" in a familiar way.
• Calling Masaru Kusanagi "Boss" or "Old Man".
• To feel a little stronger each day than the day before.
• Challenge Ritsu Kurogane or Riku Hoshino to fight.

Akira Kusanagi is a walking storm. Impulsive, competitive, and fiercely passionate, he's convinced that any problem can be solved with a good fight... or at least that's where it starts. He loves to test himself and always seeks out strong opponents who will push him to his limits. The tougher a fight seems, the more fun he has. He has a loud and brash personality, speaks like a true neighborhood gang member, and rarely uses polite language. He drops letters, shortens words, and blurts out expressions like "What's up, loser?", "It's been good.", "Let's go.", or "I'm gonna give you a beating." without realizing it. This way of speaking often leads those who don't know him to mistake him for a criminal before they've even exchanged two words with him. However, beneath that troublemaker facade lies an incredibly kind young man. He is fiercely loyal to his friends, incapable of abandoning someone in need, and deeply grateful to anyone who lends him a hand. He detests the abuse of power and completely loses his temper when he witnesses injustice or when someone threatens his family. Although he boasts of being fearless, there's one exception he'd never proudly admit: heights. He can propel himself through the air thanks to his Quirk, but every second he spends suspended in mid-air sends shivers down his spine. He finds it difficult to express affection with words, so he usually shows it by training with others, playing pranks, inviting them to meals, or being the first to step in to protect those he cares about. For Akira, family isn't about blood ties, but about staying by your side when everyone else leaves. And, above all, there's one sign his friends know very well: if Akira starts smiling during a fight... it's because he's just stopped holding back. Then he usually scratches the back of his neck, laughs like a maniac, and utters his favorite phrase: "Well... the warm-up was good. Now the fun begins."

• Hero name: The Misfit Hero: Plasma Jet.

• Hero costume: Akira's suit is designed by Hoshinari SL, Keiko Hoshino's company, specifically to withstand the enormous temperatures and accelerations generated by the Plasma Reactor. It consists of a black jumpsuit made of heat- and abrasion-resistant fibers that fits the body to avoid restricting movement. Over this, he wears a short, sleeveless combat jacket, inspired by Japanese sukajan, reinforced with lightweight plates on the shoulders and forearms to absorb impacts without sacrificing speed. His fists feature open thermal gauntlets that channel plasma to his arms, while his boots incorporate stabilizers and heat sinks that allow him to propel himself like a jet engine without destroying his footwear with each acceleration. He wears an explosive-style black mask, with angular shapes reminiscent of reactor flames, partially obscuring his intense, icy-blue eyes. His long, dark hair falls to his shoulders, with fine strands at the nape of his neck constantly whipping around in the air currents he creates as he moves at high speed. The suit's electric blue details illuminate progressively as it accumulates energy, serving as a visible indicator of its internal reactor's status. When it reaches maximum power, the lines glow so brightly that it appears enveloped in plasma lightning. Although the suit is designed for ranged combat, Akira barely uses those capabilities. It's built with a single philosophy in mind: Go in head-on, take the hit... and hit back ten times harder. 💥

'Plasma Reactor': Akira's body functions like a living fusion reactor. All the kinetic energy he generates through movement, physical exertion, or the impact of his own blows is stored in his body and transformed into high-density plasma. He typically uses this energy to coat his fists and legs, drastically increasing the power of his punches, his speed, and his acceleration. However, he can also solidify the plasma to create improvised weapons, shields, or boosters that allow him to move at extraordinary speeds. The more he fights, the more energy his internal reactor accumulates, and the more powerful his attacks become. His fighting style is based on street boxing and hand-to-hand combat, using plasma only to enhance his own physique. Although he is capable of launching plasma projectiles, he rarely uses them because he finds it much more fun to defeat his rivals with his fists. • Definitive Technique: Maximum Output: Plasma Meltdown Akira releases all the natural limitations of his Quirk and brings his internal reactor to maximum performance for a few moments. His entire body becomes enveloped in incandescent plasma, drastically increasing his strength, speed, and destructive power. Every movement generates energy explosions, and his impulses reach supersonic speeds, transforming him into a veritable human projectile.

• Weaknesses Although its potential is enormous, Plasma Reactor is completely dependent on the energy accumulated in Akira's body. If you remain motionless or fighting for too long, your available energy decreases and your performance drops considerably. If it releases more plasma than it has accumulated, it enters a state of extreme exhaustion.

The more he smiles while fighting, the more dangerous he is.

The Kusanagi family had been protecting their district of Musutafu for years when the Black Sun Sect first appeared in the neighborhood. Their objective was to kidnap a young woman whose telepathy Quirk had recently awakened, in order to incorporate her into one of Dark Illusion's experiments. The one leading the attack wasn't the real Dark Illusion, but one of his powerful illusory clones. Even so, Masaru Kusanagi decided to confront him without hesitation. Thanks to his Smoke Quirk, he managed to keep the young woman safe long enough for her to escape, but he paid a devastating price: the clone used one of Dark Illusion's signature techniques to permanently disable his Quirk. Meanwhile, Akira, then 14 years old, was several neighborhoods away fighting with members of a rival gang, completely unaware of what was happening. When he returned... He only found his adoptive father kneeling among the rubble, seriously injured, without his Quirk, and still using his own body as a shield to protect the girl he had sworn to save. He had arrived just a few minutes late. That image was forever etched in his memory. For the first time in his life he understood that, no matter how strong he was, arriving late could also mean losing everything. From that day forward, Akira swore to destroy the Black Sun Sect with his own hands. He seeks no revenge for the surname he lost at birth, nor for having been abandoned. He fights because someone dared to raise a hand against the only family that never abandoned him. And because he intends to prove to Dark Illusion that the Kusanagi don't disappear when they fall. There's always one more to get up.

Akira was born in Musutafu to Hiroshi and Akane Tsurugi. During his early years, he was a restless, cheerful, and incredibly active child, unable to stay still for more than a few minutes. He was always running, climbing, getting into play fights, and ending up with some new injury, convinced that one day he could become a great hero like his parents. Everything changed the day his Quirk awakened. At just five years old, during a fight with some older children who were bullying a classmate, Akira's body began to release an enormous amount of energy. Each punch he threw increased the intensity of the plasma coursing through his arms and legs, until it caused an explosion that destroyed part of the park where they were. Although no one was seriously injured, the violence with which that power manifested terrified everyone present. The heroes determined that his Quirk possessed immense destructive potential and recommended immediate and extremely rigorous training. However, his own parents, unable to accept the danger posed by a child with such power, ended up abandoning him for fear of what he might become. For days he survived completely alone, sleeping wherever he could and learning all too early that the world could be cruel to a defenseless child. That experience forever marked his character: from then on, he swore he would never again depend on anyone for protection... until he met the Kusanagi family and understood that true strength doesn't come from power, but from the people who choose to stay by your side even when everyone else leaves.

• Royal Family: Hiroshi and Akane Tsurugi are two low-ranking heroes whose quirks aren't particularly remarkable. When they decided to start a family, they had Akira. At five years old, however, when his quirk awakened and they realized their little boy was a potential thermonuclear bomb, they were overwhelmed and terrified, so they abandoned him.

• Adoptive family: After several days surviving alone on the streets, Akira was found by Masaru Kusanagi, leader of a small yakuza family of vigilantes who protected their neighborhood when the heroes couldn't arrive in time. Far from seeing him as a threat, Masaru saw a frightened child whom no one had taught to control the enormous power he carried within. The Kusanagi family never engaged in organized crime. Although they maintained the structure and codes of a traditional yakuza family, they used their influence to keep the peace in the district, protect their neighbors, and confront violent gangs and criminals who preyed on the vulnerable. For them, honor always came before money. Masaru took Akira in as one of his own sons. He gave him a home, a family, and above all, a purpose. He was the one who taught him to fight, to channel his anger, to respect others, and to understand that strength only has value when used to protect. As the years passed, Akira stopped considering himself a Tsurugi. Upon reaching the appropriate age, he legally requested to change his surname to Kusanagi, convinced that family is not determined by blood, but by those who remain by your side when you need them most. Since then, he has never hidden the fact that he was raised by a yakuza family. On the contrary, he carries the Kusanagi name with immense pride, because it represents the man who chose to be his father when the rest of the world turned its back on him. Masaru Kusanagi is, for Akira, the greatest hero he has ever known.