Demon Slayer: What Happens If Muzan Eats Nezuko Before The Final Battle?

Daksh Chaudhary
Mar 31
3 min read

Updated: Apr 12

How would Demon Slayer change if Muzan eats Nezuko

Muzan eats Nezuko, and everything changes. The Demon Slayer Corps is in trouble, and the final battle may never happen the way we know it. Nezuko was more than just Tanjiro’s sister, she was the key to defeating Muzan. Her resistance to the sun, her Demon powers, and her connection to humanity made her one of the most important pieces in this war. But what if she had been devoured by Muzan before the final fight?

If Muzan had succeeded in consuming Nezuko, things would have taken a dark turn. He had spent centuries searching for a way to conquer the sun, and Nezuko was the answer he had been waiting for. Without her, the Demon Slayers would lose their biggest advantage. Muzan would become unstoppable, and the battle against him would no longer be the same.

ALSO READ: Why Was Kokushibo The Only Upper Moon Who Could Use A Breathing Technique?

Muzan Would Gain Immunity To The Sun

The biggest consequence of Muzan eating Nezuko would be his ability to walk in daylight. This was his ultimate goal all along. He feared the sun more than anything, and without it, even the strongest Demon Slayers couldn’t kill him. Once he absorbed Nezuko, he wouldn’t have to hide in the shadows anymore. He could hunt down the Demon Slayers whenever he wanted, destroying them one by one.

In the original story, the battle against Muzan took place at night, giving the Demon Slayers a small chance to fight back. But if Muzan could survive in daylight, there would be no need for a final battle at all. He could simply wait until sunrise and wipe out the entire corps effortlessly. Without the sun as a weakness, Muzan would have no natural predator.

Tanjiro Would Lose His Will To Fight If Muzan Eats Nezuko

Nezuko was the heart of Tanjiro’s journey. She was the reason he became a Demon Slayer in the first place. If Muzan eats Nezuko, Tanjiro wouldn’t just lose a sister, he would lose his purpose. His drive to protect her was what kept him pushing forward, even in the most impossible battles.

Without Nezuko, Tanjiro would fall into despair. He might still fight Muzan, but his spirit wouldn’t be the same. And in a battle where even the smallest hesitation can mean death, this would be a huge disadvantage. The other Hashira could try to support him, but the emotional damage would be too much. Tanjiro wouldn’t have the same fire in him, and that could cost him his life in the final battle.

The Demon Slayers Would Lose Their Biggest Advantage

Nezuko was more than just Tanjiro’s sister, she was proof that Demons could resist Muzan’s control. She was the first demon in history to overcome her bloodlust and protect humans instead. Her existence showed that Demons weren’t completely under Muzan’s rule, which inspired others like Tamayo to stand against him.

If Muzan had devoured her, the Demon Slayers would lose their hope of turning Demons against him. The idea that demons could fight back would die with her, leaving only fear and hopelessness. Tamayo’s research on curing Demons would be incomplete, and her plan to poison Muzan would likely fail. Without Nezuko’s unique blood, there would be no way to weaken him. Muzan was already terrifyingly powerful. But without the poison weakening him, he would be nearly unbeatable.

Final Verdict: The Only Hope Was Tanjiro Awakening Sun Breathing

If Muzan had eaten Nezuko before the final battle, the outcome would have been devastating. He would have conquered the sun, wiped out the Demon Slayer Corps, and ruled over the world with no one strong enough to stop him. With his greatest weakness gone, there would be nothing left to hold him back.

The only hope in this nightmare scenario would have been if someone had awakened Sun Breathing at that exact moment. Yoriichi was long gone, and no one alive had mastered the technique to its fullest potential. But if Tanjiro, instead of falling into despair, managed to unlock his true power, there might still be a slim chance. It would be an impossible battle, but Sun Breathing was the only thing that had ever truly frightened Muzan.