Facebook
Reddit
Email
Discover how Kibutsuji Muzan met his end in Demon Slayer, the intense battle that led to his downfall, and its impact on the world.
Kibutsuji Muzan, the Demon King himself, was finally defeated in Demon Slayer after an all-out war that tested the Demon Slayer Corps to its absolute limits. It wasn’t easy, but thanks to a mix of relentless fighting, smart tactics, and, of course, the good old rising sun, Muzan was burned to nothing. No matter how insanely strong he was, how fast he could heal, or how long he’d managed to dodge death, he had one weakness he could never shake—sunlight. And in the end, that’s what took him down.
But let’s be real—taking out someone like Muzan was never going to be simple. This wasn’t just about swinging swords and hoping for the best. It was about strategy, teamwork, and sheer determination. It was up to the Demon Slayers to work together, exploit every opening, and survive long enough for the sun to end the war. This wasn’t just a fight; it was the fight—generations in the making. And in the end, humanity’s unbreakable will won out.
But how exactly did they do it? Let’s break down the epic battle, Muzan’s last moments, and what happened after his defeat.
Muzan vs. The Demon Slayer Corps
Muzan’s final battle in Demon Slayer was a chaotic clash between the Demon King and humanity’s last line of defense. After Tamayo successfully injected Muzan with a specialized drug designed to age him rapidly, weaken his regeneration, and strip him of his immortality, the Demon Slayer Corps engaged him in battle. The drug didn’t work immediately, so the Demon Slayers had to hold Muzan off while it took effect.
The Struggle Against an Immortal Foe
The Hashira and other fighters, including Tanjiro and his allies, launched relentless attacks to subdue Muzan. But let’s be honest—this wasn’t just any ordinary fight. Muzan was an absolute monster, both literally and figuratively. His monstrous form, capable of unleashing devastating shockwaves and tentacle-like appendages, made it nearly impossible for anyone to land a decisive blow. Every time they thought they had an opening, Muzan would regenerate and counter with even deadlier attacks.
The battle quickly turned into a brutal war of endurance. The Demon Slayers weren’t fighting to kill Muzan outright—they were fighting to outlast him. Every second counted. Their main goal was to stall him until sunrise because that was the one thing Muzan could never conquer.
The Cost of Victory
This fight wasn’t without sacrifices. Many warriors sustained severe injuries or perished trying to hold Muzan back. The longer the battle dragged on, the more exhausted they became. Even the strongest Hashira were barely hanging on, their bodies pushed past their limits. But despite their pain, despite their losses, they refused to let Muzan escape. It was a battle of wills, and the Demon Slayer Corps had no intention of losing.
Meanwhile, Muzan was starting to feel the effects of Tamayo’s drug. His body was breaking down, his movements becoming slower. For the first time in centuries, he was experiencing something he had never known—true fear.
Muzan’s Final Moments in Demon Slayer
As dawn approached, the Demon Slayer Corps made one final push. They realized that if Muzan escaped, all their efforts would be in vain. With everything they had left, they worked together to pin him down. Tanjiro, Giyu, and the remaining fighters fought with every ounce of strength in their bodies, keeping Muzan from retreating underground.
Muzan, who had always been so sure of his invincibility, was suddenly facing the inevitable. No amount of strength, regeneration, or power could save him from the rising sun. The very thing he had spent centuries fearing was now sealing his fate.
His body began to break apart as the sun’s rays hit him. He struggled, clawing at the ground, trying to escape, but it was useless. The once-unstoppable Demon King was crumbling into nothing. His screams echoed as his body disintegrated, and just like that, the reign of Kibutsuji Muzan ended.
The Passing of Muzan’s Wishes to Tanjiro
But Muzan just couldn’t accept that he had lost, even in death. In the end, he was doing whatever he could, pouring what remained of his own consciousness and demonic essence into Tanjiro, effectively making him the next Demon King in the process. In his warped logic, this was his version of immortality. He thought Tanjiro was the ultimate being — a creature who could walk in the sun and hold all the lethal strength of a demon.
And for a second? It genuinely appeared as if Muzan had triumphed. The hero of the story — the guy whose teeth and nails ground against demons to take them down — had just now become the worst of them all. The Demon Slayer Corps hardly had a moment to breathe after their hard-fought victory over Muzan, and suddenly they find themselves facing an even bigger nightmare—Tanjiro, now stronger, wilder, and completely out of control.
Tanjiro’s Fate in Demon Slayer
It caught everyone off guard—Tanjiro, the guy who battled demons, turned into the most powerful one of them all. As a demon, he stood in a league of his own. He surpassed Muzan in strength and speed, and to make matters worse? The usual limitations that held other demons back didn’t apply to him. If he had lost control, he would have wiped out the remaining Demon Slayer Corps without breaking a sweat.
But here’s the kicker—Tanjiro wasn’t cut from the same cloth as Muzan. He had something the Demon King lacked: people who stuck by him no matter what. Nezuko, having gone through the same ordeal, reached out to him first. His friends stood their ground too. And Kanao? Despite her injuries, she put everything on the line to inject him with Tamayo’s cure.
The process wasn’t quick, and it wasn’t a walk in the park, but, Tanjiro’s human side prevailed. He shook off Muzan’s control and returned to his true self. That marked the real final triumph—not just defeating Muzan but turning his back on everything Muzan represented. With Tanjiro back to normal and Muzan gone for good, the demon era came to a definitive end.
Conclusion
Kibutsuji Muzan’s defeat in Demon Slayer wasn’t just about one epic showdown—it was the result of generations of blood, sweat, and sacrifice. The Demon Slayer Corps didn’t win because they had the strongest fighters. They won because they had something Muzan could never understand—unbreakable determination and the power of standing together.
For all of Muzan’s overwhelming strength, endless transformations, and centuries of terror, he was ultimately taken down by the one thing he could never defeat—humanity’s resilience. No matter how many demons he created, no matter how much fear he spread, he couldn’t break the will of those who refused to back down.
And in the end, despite everything he tried, Muzan couldn’t outrun fate. The sun—the very thing he had spent his entire existence avoiding—was what finally destroyed him. His fall wasn’t just the end of a villain; it was the end of an era. The world was finally free from demons, and those who had fought for this moment could finally look ahead to a future without fear.
It was a brutal, painful road to victory, but in the end, the Demon Slayer Corps won—not just for themselves, but for everyone who had ever suffered because of Muzan.
Looking For More?
Thank you for reading the article. We provide the latest news and create guides for Baldur’s Gate 3, Starfield, ARK Survival Ascended, and more. Also, watch Deltia play games on Twitch or visit his YouTube channel!
