Did Muzan Make A Mistake By Bringing The Demon Slayers Into The Infinity Castle?
- Daksh Chaudhary
- 4 days ago
- 3 min read

When Muzan Kibutsuji pulled the Demon Slayers into the Infinity Castle, it looked like a power move. The castle was his home turf. It shifted like a maze, and no one could leave without his will. On the surface, it seemed like Muzan had complete control. But what happened inside was anything but in his favor.
The moment the Demon Slayers arrived, everything started to fall apart for Muzan. What he thought would be an advantage quickly turned into a battlefield of chaos for him and his Upper Moons. So the question stands: did Muzan actually make a huge mistake by bringing his enemies straight into the Infinity Castle?
The Castle Was His Domain, But It Didn’t Help Much

Muzan’s biggest advantage was the Infinity Castle itself. It wasn’t just a hideout, it was alive and controlled by Nakime, the Biwa-playing Demon. The castle could twist, stretch, and move like a puzzle. Muzan believed that by pulling the Demon Slayers inside, he could break their formation and wipe them out one by one.
But instead of trapping the Slayers, it split them up into smaller teams, and that became a problem. Each Hashira ended up facing an Upper Moon alone or with one ally. That’s exactly what the Demon Slayers train for. These one-on-one fights allowed the Hashira to fully show their strength without distractions. In a way, Muzan handed them the perfect battleground.
Upper Moons Dropped One By One

Muzan’s Upper Moons were supposed to be unbeatable. Kokushibo, Akaza, Doma, each of them had killed countless Hashira over the years. But inside the Infinity Castle, they started falling. One of the first major defeats was Akaza. He fought hard, but Giyu and Tanjiro pushed him to his limit, and he eventually self-destructed.
Doma, another terrifying demon, was taken down by Kanao and Shinobu’s combined plan. And Kokushibo, the strongest demon after Muzan, was finally defeated by Gyomei, Sanemi, and Genya, who gave it everything they had. This wasn’t a lucky streak, but a result of years of training, pain, and strong teamwork. By forcing the Demon Slayers into close combat inside the castle, Muzan unintentionally gave them the opportunity to settle the score once and for all.
The Demon Slayers Were Prepared For War

Another reason Muzan’s plan backfired was simple - the Demon Slayers were ready. They knew this was the final stretch. Every one of them had made peace with dying, and they brought their best moves. They used their marks, red Nichirin blades, and even team strategies. Some, like Muichiro, awakened powers far beyond what they’d shown before.
The Hashira weren’t ordinary soldiers. They were warriors with a deep purpose. Each of them had lost something to demons: families, friends, or even their bodies. That pain turned into strength. Inside the Infinity Castle, they didn’t get weaker. They got sharper. Hungrier. More focused. Muzan underestimated their resolve. He thought fear would break them, but it only made them fight harder.
Muzan Was Running Out Of Time

The biggest mistake Muzan made wasn’t just bringing the Slayers into his Infinity Castle, it was doing it too soon. The Demon Slayer Corps was already closing in on his location. He panicked and made a move out of fear, not confidence. That’s never a good sign from someone who’s supposed to be in control.
And once the castle collapsed after Nakime was killed, Muzan had nowhere left to run. He had to face the survivors in the open, during sunrise, where time was against him. This wasn’t how he planned to fight. He was used to hiding in the shadows, striking from the dark. But by rushing the final battle, he brought himself into the light.
Final Verdict: Yes, Muzan Made A Huge Mistake Bringing Slayers To Infinity Castle

Looking back, Muzan's decision to drag the Demon Slayers into the Infinity Castle was a massive mistake. He believed it would isolate them and give him the upper hand. Instead, it brought all his enemies right to his doorstep, and they were more than ready to fight.
His best fighters were killed, and his castle was destroyed. And when it was all over, he stood alone against a group of warriors who had nothing left to lose. Muzan may have controlled the castle, but the Demon Slayers controlled the outcome. In the end, his own move became the beginning of his end.
Release Year | MAL Rating | Animation Studio | Genre | Watch On |
April 2019 | 8.44 | Ufotable | Action, Supernatural |
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