As soon as Kakine said that, his white wings suddenly let out an intense, bright light.
“?!”
Accelerator felt a pain like he was being slowly roasted, and reflexively got away from
Kakine. Then he realized the strangeness of what had just happened.
Accelerator, who reflected every vector, had just been affected by an outside force.
“That was diffraction. When light waves and electrons pass through a slit, the waves
scatter in different directions. It’s in high school textbooks. If you make more than one
slit, you can make the waves interfere with one another.”
Basically, his white wings had tiny gaps too small to see, and those gaps changed the
nature of the sunlight coming through them and attacked him...or so Accelerator figured.
His wings hadn’t made light—they’d altered the light passing through them.
“Yeah, like everything, it all depends on how you use it. How’s it feel to die from a
sunburn?”
But...
“...Looks like you flunked physics, moron. Use diffraction all you want—you can’t change
sunlight into a death beam.”
“Maybe not, if I was obeying this universe’s physics.”
Kakine began to boost his wings with power as though drawing back a bowstring.
“But my Dark Matter is a new kind of matter that doesn’t exist in this universe. Our
existing laws of physics don’t apply to it. Any sunlight that touches the Dark Matter and
reflects off it starts working on independent laws. It’s called a foreign substance for a
reason. A tiny bit of it and the world changes completely.”
The six wings flapped. They stirred up a gale, and as Accelerator buffeted it with his
reflection, he realized what Kakine was after. He looked right at him to see him smiling
thinly.
“...I’m done reverse-engineering it.”
“!!”
Accelerator tried to get out of the way, but Kakine had already unleashed his six wings:
as simple blunt killing instruments.
Dull sounds ripped through Accelerator’s innards.
His body, reflecting every vector, was blown away. He crashed into a tree over ten
meters away, breaking its thick trunk in one go.
“Guh, pah...?!”
(The sunlight, the gale...their meaning...!!)
“Accelerator, you say you reflect everything, but that’s not quite accurate.”
Kakine’s wings silently extended.
They looked like giant swords now, over twenty meters long. Accelerator jumped over a
building top, but the wings, positioned vertically, struck him like a crumbling tower.
“If you reflect sound, you can’t hear anything. If you reflect matter, you can’t hold
anything. You unconsciously filter out the harmful from the beneficial, and you only
reflect what you don’t need.”
As Accelerator coughed up blood, he jumped to the side, breaking through the remains
of a water storage tank.
The white wings swung down, ripping through the building from its roof to midway
through, spreading dust everywhere.
“My Dark Matter affected that sunlight and wind just now. I injected them with twenty--
five thousand vectors each. After that, your reflection used its good-bad filter—I just had
to attack from the direction of a vector you’re unconsciously letting through.”
Even if Accelerator changed his reflection’s composition, Kakine would redo his search
in an instant. It would trap him in a vicious cycle. He’d just accumulate damage while
switching between attack and defense.
“This is Dark Matter,” grinned Kakine Teitoku, holding his six wings at the ready. “A
space filled with a foreign substance. A space you don’t know shit about.”
-Toaru Majutsu no Index Volume 15 Chapter 5 Part 3