Description of Angel Fall

No matter what channel he flipped to, all he saw were people with mixed-up clothes. The fact that the broadcast stations were like that meant that the disaster didn’t only encompass their beach house; the same thing was happening all over Japan. No, maybe, it was the entire world. (...Hmm. Or maybe I’m just seeing some weird hallucinations?) A problem was occurring all across the planet, but its physical scale paled in comparison to the other thing: Everyone around him was forcing him to believe that this scrambled world was normal.
(Toaru Majutsu no Index Volume 4, pg 17)

“Hm? Yeah, everyone’s acting kinda weird. It’s like their insides and outsides got totally swapped out or something, but...Huh? How do you know that?” Kamijou looked over toward the waves coming in. The group of weirdos were playing with the beach ball. “What I mean is—Nee-chin thinks that you’re the criminal who used magic to make this substitution happen!”
(Toaru Majutsu no Index Volume 4, pg 23)

“Kamijou Touma! We know that you caused this substitution magic—Angel Fall! Return everything to normal before I count to three!”
(Toaru Majutsu no Index Volume 4, pg 24)

Kamijou frowned. The term “substitution” struck a chord, given how everyone was this morning when he got up, not to mention the crazy scenes on TV. But what was this about a side effect? And what would the real issue be? This was starting to sound like someone had started another incident. Kanzaki saw his dubious face and sighed. “Tsuchimikado, it is cruel to expect a comprehension of the truth out of one who does not even understand the tree of Kabbalah.” “I got it. But doesn’t that mean your own hypothesis was wrong, nyaa?” Tsuchimikado grinned. “You really think a magic amateur like Kamijou Touma could use such a grand magic like Angel Fall to swap everyone’s insides and outsides?”
(Toaru Majutsu no Index Volume 4, pg 28)

“There is currently a certain magic unfolding on a global scale. The case files in the British Library have nothing to say about the phenomenon, and the particular techniques involved and composition thereof are unknown. Because of its particular effects, we have opted to call it Angel Fall for convenience.”
(Toaru Majutsu no Index Volume 4, pg 29)

“Let us continue. Angel Fall is related to a concept in Kabbalah of something called the Tree of Sephirot. Have you heard of it?” “...I don’t think so?” Kamijou actually thought he might have heard it somewhere, but it was only a vague recollection, so he denied it. He had a feeling the magician Stiyl had mentioned it during their fight with the alchemist, but... “The Tree of Sephirot is basically a ranking chart. It has the ranking of the souls of God, angels, and humans graded on a ten-step pyramid. Just think of it like that.” “To put it bluntly, it’s like a map of God’s absolute reign that basically says that this territory is for humans and this territory is for God—so don’t go coming in all willy-nilly.” “The number of people and the number of angels are all decided beforehand, so normally, a human cannot climb to the status of angel. It goes both ways; an angel also cannot fall to the level of a human.” “Basically, all the ranks are filled to capacity.” “By the way,” Kanzaki continued after Tsuchimikado’s comment, “what we call Angel Fall is referring to an angel of a heavenly rank being forced down to the rank of humans. Like a cup that was already filled, if you pour in one more drop, if an angel falls to the rank of humans, then—Is something the matter?” “Er, well...” Kamijou gave an extremely apologetic face. “Umm...angels?” “Yes. Specifically, not envoys of the heavens but envoys of a master.
(Toaru Majutsu no Index Volume 4, pg 29-30)

“I’m not sure what you mean by that question. Anyway.” Kanzaki gave a cough. “Because an angel has been forcibly moved from a higher sefira to a lower one via Angel Fall, because of the fluctuations it has caused, the four worlds creating the form of the ten sefira—specifically, Olam Atzilut (the shaping world), Olam Beriah (the creating world), Olam Yetzira (the formative world), and Olam Asiyah (the physical world)—are being affected. “...Tsuchimikado-san, what on earth is this person saying?” “Hmm, how would you put it simply, nya? Like you said, everyone’s insides and outsides got swapped out. It’s essentially a game of musical chairs. At the start of the game, all the chairs and people who need to sit are scattered about, right? But there isn’t a chair for every single participant in the game. The one who gets bounced out would end up in heaven, sitting on the angel’s chair.” Substitution.
(Toaru Majutsu no Index Volume 4, pg 32)

“And the exact technique is unknown, but Angel Fall is global-scale magic. It’s too much load for a single magician to handle, so they’ve probably set up a ritual site that’s using a barrier or a magic circle,” he explained, amused. “Therefore, there are two options for stopping Angel Fall. One is to take down the caster. The other is to wreck the ritual site. We do have a time limit at the moment, but we don’t know when it’ll run out, so it’s quite the heart-pounding situation we’re in!”
(Toaru Majutsu no Index Volume 4, pg 33)

“There are two main groups we can separate predicted reasons into. One is to capture an angel fallen to the rank of human and place a collar on it to use as a familiar. Or perhaps they plan to usurp the now-empty heavenly rank.” “Either way, if it succeeds, the Kabbalah world will be in an uproar. Stella Matutina would go mad.”
(Toaru Majutsu no Index Volume 4, pg 34)

“Not at all. Angel Fall isn’t that nice. We were attending Windsor Castle. It’s got a fortress-level barrier about as strong as that white Walking Church or higher than that. Other than us, it looks like people in Westminster Abbey and the Southwark Cathedral made it out better than we did.” He grinned. “Well, it’s the distance and the barrier. With both of them, we avoided the beginning difficulties. Most magicians were engulfed by Angel Fall. Only a very select handful even realizes something has happened.”
(Toaru Majutsu no Index Volume 4, pg 35)

A spell called Angel Fall had activated. It was apparently a technique through which one could obtain an angel possessing enormous power. As a side effect, everyone in the world had swapped outside appearances. Its effective range was large enough to cover the whole world. Angel Fall was in an incomplete, temporarily active state, and the commotion might still be fixable. However, he was given to think that when Angel Fall completed, there would be no repairing it. In order to stop Angel Fall, they apparently either needed to take down the practitioner or destroy the ritual site.
(Toaru Majutsu no Index Volume 4, pg 56-57)

“...Are you saying it could be Angel Fall?” They’d mentioned planet-wide grand magic and ritual sites before, but he shuddered anew at the fact that twenty-eight people had been killed for it. It was like the devil- worshipping black mages in picture books.
(Toaru Majutsu no Index Volume 4, pg 81)

“This is...” The “substitution” didn’t apply only to flesh and blood; it extended to photographs, as well. The fact that Aogami Pierce was able to wear Index’s habit just fine probably followed the same logic. Everything related to the person—from their clothes and shoe size to their fingerprints and blood-borne information to photographs and videos of them—had been substituted. Those memories inside the framed picture had been distorted by Angel Fall as well. Kamijou was still depicted as his child self thanks to the effects of his Imagine Breaker, but in place of his mother was depicted Index, and in place of his father was depicted—
(Toaru Majutsu no Index Volume 4, pg 121)

“You see, ‘Misha’ is, well—” Kanzaki stared at Misha without faltering. “—In Russia, it’s a name given to boys. It’s far too strange to even use as a fake name.” On the other hand, the Misha in question said nothing. She narrowed her eyes and adjusted the aim of her crowbar from Touya to Kanzaki. “What? Why would she do something like that...?” “When we put in an inquiry to the Russian Orthodox Church about it, we learned that there’s a Sasha Kreutzev, though. The one she’s substituted with is probably Sasha.” Kamijou looked at Misha’s face. That’s right—if she was under the effects of Angel Fall, she’d have to have been swapped with someone. It would be strange otherwise. But if that was the case, then who was this girl who had substituted in for Kreutzev? “They exist, Kami-yan—people in this world who can become either a man or a woman. Their genders are always indeterminate, and they are present in the myths as both neither and both. A name, for them, is their objective itself, for which God made them. They would never be able to exchange names.” Kamijou frowned at what Tsuchimikado was saying. “Kami-yan, did you forget? What’s this grand spell called again?”
(Toaru Majutsu no Index Volume 4, pg 139)