The world of My Hero Academia appears to run on an unshakable bedrock of alliances—hero agencies pooling resources, schools forging the next generation, and civilians placing absolute faith in their costumed protectors. Yet the series constantly reminds us that these bonds are more fragile than they seem. Every major arc pushes the very concept of hero society to its breaking point, revealing that the alliances we take for granted can shatter under the weight of ideology, ambition, and sheer desperation. Understanding how these fractures form, and how they reshape the lives of both heroes and villains, is key to grasping the narrative’s deepest messages about power, responsibility, and community.

The Pillars of Hero Society: An Overview

Before examining the conflicts that tear alliances apart, it helps to understand the scaffolding holding hero society together. On the surface, the system looks remarkably cohesive. Hero agencies operate like professional firms, with sidekicks, rankings, and public relations departments. The Provisional Hero License Exam ensures a minimum standard of competence and ethical judgment. And at the center of it all stands U.A. High School, a training ground that fosters camaraderie and instills the ideals of self-sacrifice. This framework relies on public trust—without it, heroes would lose the legal and moral authority to act. The Commission for Hero Affairs further regulates the industry, but it also introduces bureaucratic tensions, especially when its own decisions clash with the moral compass of individual heroes.

Beneath that polished exterior, however, lurk deep structural flaws. The ranking system fuels rivalry over cooperation. The monetization of hero work can incentivize fame-seeking over genuine service. Entire segments of society—those with "villainous" Quirks or the Quirkless—are often marginalized long before they ever pick up a weapon. These pre-existing cracks make the system vulnerable to the seismic conflicts that unfold throughout the series.

Fractures from Without: The Rise of Organized Villainy

No single force does more to expose the fragility of hero alliances than the League of Villains and its ideological successors. Early in the series, villains were often portrayed as isolated criminals. But the rise of charismatic, strategic leaders transformed scattered threats into a movement that would permanently alter public perception.

The League of Villains: Ideology Over Chaos

When Tomura Shigaraki gathers outcasts like Dabi, Himiko Toga, and Spinner, he does more than assemble a gang; he creates a warped mirror of hero society’s own exclusivity. The League’s attack on the U.S.J. facility shatters the illusion of U.A.’s invincibility and plants the first seed of doubt in the public’s mind. Each subsequent operation—from the summer camp raid leading to Bakugo’s kidnapping to the High-End Nomu assault in Jakku—further erodes confidence. What makes Shigaraki particularly dangerous is his ability to weaponize the very grievances the hero system ignores. Characters like Twice and Toga are not remotely pure evil; their backstories reveal people failed by society’s rigid norms. By offering them acceptance, the League creates a bond that hero organizations struggle to replicate, directly challenging the notion that heroism holds a monopoly on meaningful connection. For a deep dive into the League’s origins and key members, explore the My Hero Academia Wiki.

Stain’s Crusade and Its Long Shadow

Hero society suffered its first true ideological bomb from the Hero Killer: Stain. His manifesto—that only altruistic heroes like All Might deserve to exist—spreads like a contagion precisely because the public already sensed that some heroes were in it for fame or money. Stain’s conviction resonates not just with future villains but with disenchanted citizens and even hero students. Iida’s vengeful confrontation with Stain and the subsequent viral video of Stain’s speech fracture the assumed unity between heroes and the public, forcing civilians to question the very definitions of heroism. This incident also demonstrates that a lone radical can do more damage to institutional trust than a dozen bank robberies. A detailed analysis of Stain’s philosophy can be found at CBR’s exploration of his lasting impact.

Cracks Within: Hero vs. Hero Conflict

While outside threats grab headlines, some of the most consequential fractures occur inside the hero community itself. Rivalries, secrets, and generational trauma often do as much to weaken alliances as any villain’s attack.

Rivalry and Redemption: Midoriya and Bakugo

Izuku Midoriya and Katsuki Bakugo share a history defined by one-sided bullying and bitter competition, yet they are also narrative foils whose relationship reshapes the meaning of alliance. Bakugo’s initial rejection of teamwork—epitomized in his disastrous match against Midoriya and Uraraka during the Battle Trial—is a microcosm of a larger cultural issue where powerful individual heroes are celebrated over cohesive units. The kidnapping at the training camp, and All Might’s subsequent fall, force Bakugo to confront the fact that his superiority complex not only isolated him but also endangered others. His slow, painful evolution culminates in a moment of radical vulnerability: the apology to Midoriya during the Dark Hero arc. That scene is not merely personal catharsis; it symbolizes the repair of a fractured alliance and signals that even the most pride-driven hero can learn that strength without connection is brittle.

Midoriya’s own arc mirrors this struggle. Burdened with One For All and the weight of All Might’s legacy, he initially believes he must shoulder every crisis alone. The Vigilante arc strips him of alliances entirely—he pushes away friends, mentors, and even All Might. Only when Class 1-A physically and emotionally drags him back does he fully understand that true heroism cannot exist in isolation. This mutual growth between the two rivals teaches that alliances require constant effort, humility, and the courage to be seen at your worst.

Generational Divides and the Endeavor Dilemma

No internal conflict cuts deeper than the Todoroki family tragedy, which implicates the Number One Hero himself. Endeavor’s public atonement after Dabi’s live broadcast reveals that the rot within hero society can be domestic and intergenerational. The exposure of his abuse forces the public to confront the uncomfortable truth that their protector was a nightmare behind closed doors. This revelation cracks the core of hero society in a unique way: citizens must decide whether to abandon the hero system entirely or support a deeply flawed individual seeking redemption. The ripples affect all levels—pro heroes question their own priorities, students like Shoto struggle to reconcile their heritage with their future, and the Hero Commission loses even more credibility. For a more comprehensive look at Endeavor’s path to atonement, read this Anime News Network feature.

The Weight of the Public Eye: Media, Image, and the Fallible Hero

In a society where hero rankings are broadcast like sports scores, public opinion is not just a superficial concern—it directly impacts funding, recruitment, and legal authority. Several arcs explicitly explore how media narratives can shatter or rebuild alliances.

The U.A. Traitor and Internal Suspicion

The long-running mystery of the U.A. traitor subplot underscores how even the most intimate alliances can be poisoned by paranoia. Teachers suspect students, classmates eye each other nervously, and the sacred trust between mentor and protégé becomes tainted. Although the eventual revelation is less explosive than some feared, the damage to institutional morale is significant. It shows that the school—a microcosm of hero society—can harbor deception, forcing everyone to question whether their allies are genuine.

The Paranormal Liberation War: When Alliances Collapse

The Paranormal Liberation War arc serves as the cataclysmic shattering point for virtually every major alliance. Heroes and villains engage in a conflict so devastating that entire cities are leveled and countless lives are lost. For the public, watching heroes like Midnight fall and seeing top-ranked professionals overwhelmed by High-End Nomu demolishes the comforting myth of heroic invincibility. The mass resignation of pro heroes—including notable figures like Death Arms—is a direct acknowledgment that the alliance between protectors and society has broken. Why risk your life, many ask, for a public that no longer believes in you and a system that failed to prevent the tragedy?

At the same time, the war fractures villain alliances. Dabi’s reveal and Twice’s death splinter the League, while the Meta Liberation Army’s vision of “liberating” Quirk use is co-opted by Shigaraki’s more nihilistic agenda. The entire conflict underscores that alliances forged through fear or ideology are just as fragile as those built on trust. A detailed battle breakdown is available on the MHA Wiki’s war summary, illustrating how each phase contributed to this systemic collapse.

Reforging the Bonds: Character Evolution Through Cataclysm

If shattering alliances is the series’ dramatic engine, then rebuilding them is its soul. My Hero Academia consistently uses the aftermath of conflict to redefine what it means to be a hero—not as a solitary champion, but as a node in a web of interdependent relationships.

Deku’s Descent and the Vigilante Arc

Following the war, Izuku Midoriya fully embraces the lone wolf persona, convinced that only by distancing himself from everyone he loves can he keep them safe. This period represents the ultimate dissolution of his personal alliances. He abandons U.A., ignores All Might’s desperate calls, and fights with a reckless abandon that mirrors the very villains he opposes. The rescue led by Class 1-A is not just a physical intervention; it is a collective reaffirmation that his suffering belongs to them as much as his victories. Bakugo physically takes a hit for him, Iida extends a hand, and Uraraka speaks for a weary public. Only through this forcible reunion does Midoriya accept that his value as a hero is inseparable from the people who care about him. The Vigilante arc thus becomes a poignant demonstration that healing fractured trust demands more than apologies—it demands persistent, sometimes aggressive, love.

Bakugo’s Apology and the Birth of True Equality

Katsuki Bakugo’s formal apology to Midoriya on the rain-soaked grounds outside U.A. is arguably the single most important moment of alliance restoration in the entire series. For over a decade, their dynamic was defined by an unequal power structure: Bakugo’s talent and arrogance versus Midoriya’s perceived weakness. By finally naming his sins—bullying, belittling, and blaming—Bakugo voluntarily tears down that hierarchy. He offers no excuses, only accountability. This act transforms their rivalry into a partnership of equals and sets a template for how a fractured society might heal: through honest reckoning rather than performative heroism. It also gives the future generation of heroes a model that contradicts the old ranking system’s emphasis on individual supremacy.

Uraraka and the Common People: Rebuilding from Below

Alliances between heroes and the general public do not mend automatically. Uraraka Ochaco’s journey becomes increasingly focused on this grassroots repair work. Her speech at the U.A. evacuation site, where she pleads for compassion toward a terrified and potentially dangerous Himiko Toga, is a turning point. She positions heroism not as a top-down enforcement of order but as a mutual, empathetic bond with the very citizens who might otherwise be left behind. Her outreach to the common people, and even to a fallen villain, signals that the future of hero society depends on widening the circle of trust rather than fortifying the walls around it. By addressing the systemic callousness that gave rise to so many villains, Uraraka points toward a more sustainable kind of alliance.

Toward a New Hero Society: Lessons from Shattered Alliances

The conflicts that repeatedly break alliances in My Hero Academia are not narrative gimmicks to generate drama; they are analytical tools that dissect the very idea of a society dependent on super-powered guardians. Watching the League of Villains exploit heroes’ weak spots teaches that any system that neglects the vulnerable will eventually face a reckoning. The internal strife among heroes demonstrates that institutional prestige is worthless without personal integrity. The public’s fickle trust warns against resting heroism on popularity contests rather than genuine service.

What emerges from the rubble is a vision of a hero society that will have to be far more flexible, inclusive, and honest than the one All Might symbolically anchored for decades. The next generation, led by Midoriya, Bakugo, Uraraka, and their peers, understands that alliances are not static contracts—they are living relationships that must be nurtured through transparency, shared struggle, and a willingness to confront uncomfortable truths. The shattered alliances of the past thus become the raw material for something less fragile and more human.

A Society Worth Protecting

Throughout its run, My Hero Academia has shown that the shattering of alliances is not the end of the story but a necessary prerequisite for growth. Every betrayal, every public scandal, and every bone-breaking battle forces the characters and their world to renegotiate the terms of their togetherness. The hero society that survives will not be a carbon copy of the one that existed before; it will be a community that remembers the cost of complacency, the value of forgiveness, and the undeniable truth that no one—hero or civilian—can stand alone. In a world where Quirks can build and destroy in equal measure, the strongest power remains the collective will to keep reaching for each other, especially after the fall.