Demon Slayer Chapter 199

Demon Slayer Chapter 199, titled "Millenial Dawn," marks the thrilling culmination of the Sunrise Countdown Arc as the sun rises, forcing Muzan Kibutsuji into a desperate struggle against the combined might and sacrifices of Tanjiro Kamado and the Hashiras, leading to his final disintegration. Horrified by the rising sun, Muzan unleashes a shockwave, blasting Obanai Iguro and Sanemi Shinazugawa away, while Tanjiro holds on, losing his left arm in the process. Determined to pin Muzan down, Tanjiro struggles to ignite his blade, but Giyu Tomioka appears, grabbing the blade alongside him. Their combined resolve turns the blade bright red, causing Muzan to cough up blood.

As the sun ascends, Muzan frantically attempts to prevent disintegration by encasing himself in a wall of flesh, transforming into a giant baby-like creature. As the flesh engulfs Tanjiro, he headbutts Giyu to safety before being swallowed with his blade. Muzan attempts to crawl into shade, but Kiriya Ubuyashiki commands the remaining Demon Slayers to impede him. Lower-ranking Slayers hurl a bookcase onto Muzan, slowing him, while Kakushi ram cars into him, urging him to die. Muzan crushes the cars but persists, his body sizzling.

Blocked by tram cars held by more Kakushi, Muzan struggles to advance. Kiriya orders the Kakushi to retreat and survive, as Sanemi intervenes, slicing off Muzan's right hand with Wind Breathing, Ninth Form: Idaten Typhoon, though the cut is shallow. As Muzan tries to climb over the cars, Gyomei Himejima wraps his chain around the demon's neck, pulling him to the ground with the help of Kakushi. Kiriya yells for Muzan to burn, and Kuina Ubuyashiki prays for victory.

Determined not to die, Muzan digs underground. Giyu and Sanemi attack with Water Breathing, Tenth Form: Constant Flux and Wind Breathing, Fifth Form: Cold Mountain Wind, joined by Obanai's Serpent Breathing, Fourth Form: Twin-Headed Reptile, inflicting minor damage. As their strength wanes and Gyomei's chain shatters, Muzan crawls deeper. Suddenly, Tanjiro, from within, tightens his grip on his blade and attacks Muzan, causing the demon to convulse in agony, rising into the sunlight. Muzan screams as he finally disintegrates, with an extra manga page implying Tamayo's spirit also begins to fade, marking the triumphant, albeit costly, millennial dawn for humanity in the climactic Sunrise Countdown Arc of the Demon Slayer manga.