Aureolus glowered at Stiyl with razor sharp eyes. “Explode from the inside, rune magician.”
With a mysterious and uncomfortable noise, as commanded, the rune magician had expanded like a balloon and then exploded. Blood, flesh, bones and internal organs splattered the area. Flesh and blood stained the ceiling, making a large oval shape. The entire room, covered in the human body, was like one large museum created from the magician’s flesh.
“…!”
The truly terrifying thing was the fact that the blood vessels were intact, the heart undamaged. Like the map of a train, the visible heart pumped blood through the long blood vessels into the internal organs and back into the heart.

Toaru Majutsu no Index vol.2 ch.4 pt.1