Carissa’s Coup Arc is brought to a suitably ostentatious and splendid end, as Index III truly BRINGS IT this week. As Itsuwa safely delivers Touma and Vilian to the gates of Buckingham Palace, Touma gives Vilian his typical spiel of helping out for “no special reason” except that he won’t abandon all of the people “running around for their lives”, trying not to lose what’s important to them.
Carissa awaits with Curtana Original, which she uses to summon a fleet of unmanned aerial fortresses. Touma has a bear of a time keeping up with her sword’s pandimensional fragmentation, but while he was thrust into the final boss battle far quicker than he’d hoped, he’s obviously far from alone. Kanzaki, Index, Amakusa, and Sherry all arrive in turn, though Carissa isn’t cowed by any of them.
Even a Saint like Kanzaki has trouble against Carissa and Curtana, while Touma has to time his right arm just right since the weapon has a brief lag between slash and effect. He manages to strike true before Carissa can kill Vilian, who uses her crossbow to rediredct the flash bombardment from Coven Compass to land a direct hit on Carissa’s position.
Unfortunately, it only gives her a couple light scratches; more will have to be done to defeat her, which means more allies must take the stage. As Carissa picks up the idea of bombardment by having bunker-buster cruise missiles launched on the palace grounds, elder Princess Rimea broadcasts a message bringing the forces of Knights back to their feet…including Knight Leader.
Carissa soon finds she can’t launch any more missiles, since Acqua has destroyed all military antennae. This is why you have a magical backup to a vital scientific device, or vice versa, but of course Carissa hasn’t thought anything through beyond “I have Curtana Original, I am invincible.” Now she has three Saint-levels fighting her in Kanzaki, Acqua, and Leader.
And then Mom shows up. Queen Elizard casts aside her own Curtana Second, knowing it’s powerless against the original, but whips out another magical treasure of the royal family: the Union Jack, which she uses to redistribute all of the power imbued within Curtana to each and every one of the millions of British people.
This essentially turns every British citizen into a hero in their own right, with the mandate to “do what they will.” It’s essentially a re-imagining of that iconic signal from Admiral Nelson’s ship during the decisive Battle of Trafalgar: “England expects that every man will do his duty.” Only this time it isn’t just England, nor is it just men.
With over 90 million now aligned against her, Carissa can’t help but hesitate for a moment, which is the one thing she can’t do. In that moment, Index (yeah, her!) delivers a simple incantation to cause Curtana to swing upward and hold in place just long enough for Acqua to launch Touma at it with his right arm. He shatters the sword and delivers a devastating punch to Carissa, and suddenly the coup d’etat is all over.
Unfortunately, Touma’s troubles are not. The beaten Carissa is confronted by Fiamma of the Right, who is there only to check on those items which he desires to possess: Touma’s own right hand, yes, but more importantly, Index. A magical item he steals before heading off to Russia was a kind of safety device that allowed Index to live a normal daily life despite having memorized 103,000 grimoires.
In the Tower of London, Stiyl, Elizard, and Touma look over a bedridden, unconscious Index. If Touma is to save her, he must get that device back, which means he’s headed to Russialand. No rest for the weary.