stabbed in chest

Aiwass did not even attempt to evade. It stared at Accelerator with its arms still spread
out. Accelerator charged in and stuck out a hand with its fingers spread out. He just had
to alter the vectors to destroy Aiwass from the inside.
But an unexplained shock struck Accelerator on his upper body in a diagonal line.
It was a decisive strike with something like a heavy blade. Immediately after Accelerator
was aware of that, he hit the floor and rolled a few times backwards. An unbelievable
amount of blood gushed out. It wasn’t just coming from the wound on his upper body.
Blood was flowing from his mouth and nose as well. It may sound like a joke, but it
seriously seemed like a mystery that his organs didn’t come spilling out of that large
wound.
“Gh...bhaaaaaaaaaaaaaaahhhhhhhhhhhhh!?”
He didn’t know what had happened. People like Kihara Amata and Kakine Teitoku had
pierced his wall of reflection in the past, but Aiwass was different. That strike had not
been based on some theory that allowed it to slip past the reflection. Even after receiving
that decisive blow, he was still unable to analyze what had happened to his own body.
“Oh, whoops. That was my mistake,” said Aiwass sounding completely calm.

Something grew from its back pushing its long blonde hair aside. They were wings. The
wings were emitting a too brilliant brilliance that gave the feeling that it was worse for
the human body than a nuclear explosion. That must have been what had sliced
Accelerator.
The wings were very odd.
They were not simply gold colored. They were a palely glowing platinum that had a
white core. ...That wasn’t quite accurate, but it was how Accelerator expressed it in his
brain. The wings gave him a very strong out-of-place feeling because he could not
comprehend what he was seeing.
“Dammit, Aleister. You added something into the snCONSTRUCTIONbozl virus. So you
embedded an auto defense bseouABILITYgbu into my beuoAPPEARENCEdnm via Last
Order. Sorry about that. It seems a suicide prevention device has been
nbspgADDEDnpisr in. These nspidhWINGSgprws move on their own, so you’ll have to
do something about them if you want to sbgpKILLnapedv me.”
Aiwass’s words became more and more distorted.
However, Accelerator was not really listening. His eyes changed to a red even more
sinister than the blood spewing from his body. As he lay on the ground, his outstretched
hand shattered the floorboards.

- Toaru Majutsu no Index Volume 19, Chapter 4 Part 3