Thunderclap, Part 2

Gravely hurt, Megumi is being stalked by Shigemo near Shibuya 109. He calmly recounts how his Ten Shadows Technique works while retreating, then discloses his real scheme: calling forth a beast no Zenin has ever subdued and forcing Shigemo into the exorcism ritual with him, a mutual-suicide ploy patterned on a leader who centuries ago took out himself and the Gojo family's head the very same way. As shadow swallows the area, Megumi chants. Divine Dogs and Toads surface and disappear, unveiling a humanoid shell bound in metal cables. Megumi names the entity Mahoraga.

The cables tear free, wings burst out, and Megumi quietly apologizes to Yuji before the shikigami hurls him aside into a building, leaving him in suspended death. Mahoraga moves to crush Shigemo, whose innate technique Miracles, which stores tiny everyday luck to spare him in a crisis, has been emptied during his earlier brawl with Nanami. At the final moment Sukuna intervenes, knowing that the curse user's death would close the ritual and kill Megumi for good. Sukuna mends Megumi with reverse cursed technique and steps up to take on Mahoraga himself.

Drawing the Sword of Extermination, Mahoraga trades crushing blows with Sukuna, who notes the weapon's positive energy would be lethal to a cursed spirit. Sukuna shreds the shikigami with Dismantle, only to see the wheel above its head spin and mend every gash. The brawl flattens buildings and claims countless lives as Sukuna pins down its power: it adapts to every phenomenon it meets, swapping the sword's positive energy for cursed energy after studying his slashes.

As the enlarged shikigami lunges, Sukuna activates Domain Expansion: Malevolent Shrine. Unlike most domains, it raises no enclosing barrier, painting his innate domain straight into the open air, which by binding vow stretches its reach toward roughly two hundred meters. Sukuna deliberately holds the radius at one hundred forty meters and above ground to protect Megumi, then looses ceaseless slashes that grind a vast stretch of the city to dust. Mahoraga endures and presses on, so before it can adapt yet again, Sukuna ends it with the same flaming arrow that exorcised Jogo. The blast finishes the ritual. He sends a fleeing Shigemo into the crater, where the lingering domain cuts him apart, then carries Megumi to safety and hands control back to Yuji, who vomits at the destruction and hardens into cold resolve.

The episode covers the chapters depicting the Sukuna versus Mahoraga clash. Uraume pledges to keep waiting for their master, the King of Curses, to come back. The adaptation hugely extends the battle, granting Mahoraga abilities not in the manga, including air bursts, growing large enough to fling a subway train, and sprouting gills underwater. Trivia points out that Episode 36's added moment of Nobara spending one of Shigemo's Miracles goes unmentioned in this episode's account of his technique.