Which Upper Moon Demon Was Defeated First In Demon Slayer?

Gyokko and Hantengu were two of the scariest Upper Ranks in 'Demon Slayer,' and their battles were absolutely wild. Gyokko, the fish-themed demon with his creepy pottery obsession, got taken down by Muichiro Tokito, the Mist Hashira. That fight was a masterpiece of strategy—Muichiro had to push past his own limits, unlocking his Demon Slayer Mark mid-battle. The way he turned Gyokko's own arrogance against him was so satisfying. Hantengu, on the other hand, was a nightmare with his multiple emotions splitting into separate bodies. Tanjiro, Nezuko, Genya, and Mitsuri Kanroji all teamed up to finally put him down. Tanjiro’s Sun Breathing and Nezuko’s Blood Demon Art were crucial, but Mitsuri’s Love Hashira skills stole the show with her whip-like sword. These fights really showed how teamwork and raw determination can overcome even the most broken abilities. What stuck with me the most was how each character’s unique strengths came into play. Muichiro’s calm precision, Mitsuri’s relentless energy, and Tanjiro’s sheer willpower—it’s a reminder why 'Demon Slayer' nails its battles. No cheap wins, just hard-earned victories.

Tanjiro's journey in 'Demon Slayer' is incredible, but when it comes to raw power, I gotta give it to Kibutsuji Muzan. The guy's basically the final boss of the series, and for good reason—his regeneration is insane, his blood can turn humans into demons, and he’s been around for centuries, honing his skills. Even the Hashira struggle against him, and that says a lot. But what’s really terrifying is how he manipulates others, creating Upper Moon demons like Akaza and Kokushibo to do his bidding. The final arc really showcases just how unbeatable he seems until, well… spoilers. That said, Yoriichi Tsugikuni might be the only one who ever truly overpowered Muzan. The way he’s described in flashbacks is almost mythical—effortlessly dominating the progenitor of demons in a single encounter. It’s a shame we never got to see more of him in his prime, but his legacy lives on through Tanjiro and Sun Breathing.

Kanao is one of those characters that really haunts you long after you finish 'Demon Slayer'. Thinking about the upper moon demons, it’s hard not to feel a mix of pity and sadness for Kaigaku. His transformation into an upper moon after a life filled with rejection and despair is just heartbreaking. Born into a difficult life with no real prospects, Kaigaku felt the desperation of being trapped. His initial drive for strength turned into a twisted path when he was consumed by the need to prove himself, just to be recognized and valued. A lot of fans overlook how desperately he yearned for acceptance, which makes his story all the more poignant. It's painful to realize that Kaigaku sought validation from a master who ultimately left him behind. His rivalry with Zenitsu shows how much he was affected by their shared past, but instead of flourishing, he spiraled further into darkness. The fact that he willingly embraced his demon form to escape the pain of his humanity just amplifies the tragedy. It’s a harsh reminder of how not everyone can overcome their demons—literally and figuratively. If you think about it, his story serves as an incredible commentary on the struggles of finding one's place in a world that can be so unforgiving. 'Inuyasha' fans might relate to the theme of struggle and identity. Kaigaku's journey isn’t just a tale of becoming a villain, but rather a tragic exploration of how loneliness can twist your existence into a cycle of pain. If we can empathize with demons, then we can start to appreciate the depth of their stories, and that's just one of the reasons I love this series so much.

Muzan Kibutsuji is the top dog by the final arc — no contest in raw canonical terms, but saying that feels both thrilling and gross at the same time. I'm still buzzing about how the series paints his power: it's not just brute strength. Muzan's regeneration, his speed, the way he can adapt and mutate his body, and his sheer ability to twist biology make him feel like a force of nature. In the last arc he becomes almost less a person and more a terrifying biological weapon, which forces everyone — Hashiras, Tanjiro, even the medical researchers — to coordinate in ways they never had to before. Kokushibo gets called the strongest prior to Muzan because of his sword skills and centuries of battle-hardened prowess, but by the finale Muzan's influence, leadership, and the fact he can spawn and control other demons puts him above all. Watching the final battles, I was struck by how victory over Muzan required more than one hero; it needed strategy, sacrifice, and science. That makes his defeat feel earned, and I walked away with a mix of relief and admiration for how bleak yet cathartic it all was.

The debate about the strongest Hashira in 'Demon Slayer' is endless, but Gyomei Himejima stands out to me. His raw physical strength is unmatched, and his Stone Breathing techniques are devastatingly powerful. What really seals the deal is his unique ability to fight blindfolded, relying on heightened senses—something no other Hashira can replicate. That said, Sanemi Shinazugawa’s relentless aggression and blood manipulation make him a terrifying opponent too. But Gyomei’s sheer endurance and combat precision give him the edge in my book. Plus, his backstory adds so much weight to his strength—literally and emotionally.

Gyutaro's downfall was one of those moments in 'Demon Slayer' that had me glued to the screen! It was Tanjiro and Tengen Uzui, the Sound Hashira, who teamed up to take him down in that insane battle during the Entertainment District arc. The fight was brutal—Gyutaro’s blood demon art was terrifying, and Tengen lost an arm! But Tanjiro’s sheer determination, plus Nezuko’s unexpected power surge, turned the tide. Honestly, what made it epic was how they barely scraped through. Tengen’s musical score technique and Tanjiro’s sun breathing combo felt like pure desperation and teamwork at its finest. I still get chills remembering how Tanjiro decapitated Gyutaro mid-air while Tengen distracted him. And let’s not forget Zenitsu and Inosuke’s support—they held off Daki, Gyutaro’s sister, which was crucial. The aftermath was heavy too; Tengen retiring hit hard. That arc spoiled us with animation and stakes—it’s no wonder fans call it one of the series’ peaks.

Gyutaro's raw power is terrifying, no doubt—his blood sickle techniques and regeneration make him a nightmare. But strongest Upper Moon? I'd argue Akaza or Doma outclass him. Gyutaro's strength lies in his partnership with Daki; together, they're brutal, but solo? Akaza's combat instincts and Doma's sheer versatility feel more overwhelming. Remember how Akaza pushed Tanjiro and Giyu to their limits? Or Doma’s casual dominance against two Hashira? Gyutaro’s vicious, but the top tiers operate on another level. That said, Gyutaro’s psychological warfare is unmatched. His backstory adds layers to his ferocity, making him feel more visceral. He’s not just strong; he’s personal. While others might eclipse him in pure power, few Upper Moon fights capture desperation like his. The way he clings to Daki, their twisted bond—it’s haunting. Strength isn’t just about who hits harder; it’s about impact, and Gyutaro leaves scars.

The debate about the strongest character in 'Demon Slayer' is honestly one of my favorite topics to geek out about. For me, it's impossible not to crown Yoriichi Tsugikuni as the ultimate powerhouse. This guy’s legacy is insane—he invented the Sun Breathing technique, which became the foundation for all other Breathing Styles. Even centuries after his death, his influence is felt. Muzan, the series' big bad, was so terrified of him that the mere memory of Yoriichi gave him nightmares. That’s saying something! His combat skills were otherworldly; he nearly took down Muzan solo, and his speed and precision were unmatched. What’s wild is how humble Yoriichi was despite his strength. He didn’t seek glory or power, which makes him even more compelling. Compared to modern-era slayers like Tanjiro or Gyomei, Yoriichi’s feats feel almost mythical. Tanjiro might’ve inherited his techniques, but Yoriichi’s raw talent and innate ability put him in a league of his own. The way the manga frames him as this near-divine figure just cements his status for me.