Yes, Muzan can regrow his head, demonstrating near-absolute regeneration by instantly regrowing it even after being decapitated by Gyomei with a Nichirin blade, a feat only a few powerful demons like Kokushibo and Akaza could manage, as he's the source of demon power and possesses unmatched healing. This extreme regeneration is why demon slayers need special drugs and sunlight to defeat him, as standard decapitation isn't enough.
Muzan Kibutsuji: The ultimate unkillable demon king
Muzan's real scary gimmick isn't his power, but the fact that he can't die from a head cut-off. Even when the most powerful Hashira—Gyomei Himejima—does succeed in beheading him, Muzan absurdly regrows his head in an instant.
With it, he cuts through all of Muzan's vital organs and overpowers Muzan completely. Yoriichi asks Muzan a question. As he tries to regenerate his body, Muzan is stunned to discover he is unable to heal and is forced to hold his severed head in place to keep it from falling off, but it wasn't connecting.
Fans expected his brutal fight with Tanjiro and Giyu to end once his head was sliced clean off, but nope, Akaza pulls the ultimate 'not today' move and starts regenerating his head like it's no big deal. Seriously, it broke the rules of what we thought demons could do.
He is the 50th Pure Evil to be headlined. His counterpart in Demon Slayer Academy doesn't count as a PE because he has too many comedic moments.
The only canonically LGBTQ+ character in Demon Slayer is Suma, one of Tengen Uzui's wives, who is confirmed to be bisexual and polyamorous in the series' databooks, showing affection for both men and women, including Tengen and her fellow wives, Makio and Hinatsuru. While other characters like Mitsuri are speculated to be queer, Suma is the sole officially confirmed character, with her relationship dynamic highlighting both bisexuality and polyamory within the Demon Slayer Corps.
Even 400 years later, Muzan's fear of Yoriichi remained fully intact, as simply laying eyes on Tanjiro's hanafuda earrings caused him to recall their clash.
While many Hashira died in the fight, some survived: Giyu Tomioka, the Water Hashira, and Sanemi Shinazugawa, the Wind Hashira, both survive the final fight, carrying on the memory of their fallen comrades. Tanjiro also survives, and after the war, the Demon Slayer Corps disbands because demons are gone for good.
After Akaza's death, Doma says that he felt as if the Upper Rank had turned into a different creature before he died, and that his demise is inevitable because he never ate any women. Doma begins to cry over his "best friend"'s death, but Kanao just tells him to stop with the lies.
Demon Slayer enthusiasts are buzzing about the connection between Tanjiro Kamado and the formidable Upper Moon One, Kokushibo. While not directly related, Tanjiro is seen as the spiritual successor to Yoriichi Tsugikuni, Kokushibo's twin.
Muzan has always been a rational character, but fans believe killing his doctor is the only time he regretted taking a life.
Ranking of the 28 strongest characters in Demon Slayer 1/ Tanjiro the new Demon King 🌄 2/ Yoriichi the Sun Hashira 🌅 3/ Muzan the Demon King 💀 4/ Kokushibo the First Upper Moon 🌙 5/ Doma the Second Upper Moon ⛄ 6/ Giyomi the Rock Hashira ✴ 7/ Akaza the Third Upper Moon ❄ 8/ Sanemi the Wind Hashira 💨 9/ Giyu the Water ...
Swordsmith Village Arc
After falling into a coma in the aftermath of his battle against Upper Rank Six, Tanjiro Kamado dreams of memories belonging to his ancestor Sumiyoshi. Within them, Yoriichi is seen holding a newborn Sumire as her mother sleeps.
Muzan was dead, almost all demons died with him. Yushiro is the only one who survived, he's a good demon tho. He was free from Muzan, that's why he was okay. Demon Slayer Corps were disbanded after the fight...
As with the rest of the Upper Ranks who wield weapons, Doma utilizes this ability to form the two Japanese war fans he used in battle. Doma regenerates a portion of his head. Immense Regeneration: As an Upper Rank demon, Doma possesses one of the most advanced and powerful regenerative healing factors in existence.
Doma is not Inosuke's father; he is the demon who killed Inosuke's mother, Kotoha Hashibira. Doma is a high-ranking demon and a member of the Twelve Kizuki, specifically Upper Rank Two. Kotoha sought refuge in Doma's temple, not realizing he was a demon.
Although the manga does not directly depict the moment of his passing, according to official settings and the rules of the Mark, Tomioka Giyu ended his life at the age of 25 due to the price of the Mark. His death was not accompanied by battle and pain, but rather a peaceful departure after witnessing an era of peace.
Courtney Nieman he also won't kill women. Doma confirms this after his death. At most, Akaza would simply knock them out if he absolutely HAD to fight them.
By the end of the manga, only one Hashira survives and lives a full life: Tengen Uzui, the Sound Hashira. The rest meet tragic ends, either in battle or due to the toll of their Demon Slayer Marks.
One of the reasons people might consider Shinobu the "weakest" Hashira is because, unlike the others, she can't behead demons, which is usually the easiest way to kill them. Instead, she uses poison to defeat them.
In some cases, an exceptionally talented Demon Slayer can become the designated successor to one of the Hashira, known as a Tsuguko. To become a Tsuguko, a Demon Slayer can either apply for the position and get accepted, or get scouted by one of the current Hashira.
Also the reason why Nezuko was already so powerful is because Muzan injected tons of blood in her body and the others in hopes of creating a demon that could conquer the sun.
Although Rui was only a demon for 20 years, he was stated to be highly capable and was well-liked by Muzan himself. It was also stated that Rui was as powerful as Lower Rank Two or One but was not obsessed with numbers and did not feel the need to enter a Blood Battle with them in order to replace them.
What really makes the earrings scary for Muzan is that he was under the impression that yoriichi died and left nothing behind to succeed him. Yoriichi mentions in a flashback that he failed in life and didn't accomplish anything he wanted to. Then these earrings appear on this boy.