It was just like machinegun fire.
Some kind of projectile flew in at incredible speed. Kamijou could no longer follow them visually. As he fled to another column and glanced back at the floor, he did not see obvious bullet holes.
He saw masses of darkness the size of baseballs.
They must have been bending the light because the surrounding scenery stretched a bit like candy art. It looked like everything was being sucked in toward the center.
“That’s gotta be pomegranate seeds,” said Salome. “This would be Persephone…no, maybe Proserpina. Anyway, there’s a legend of a goddess being taken to the underworld, falling for a trick on the way back to the surface, eating a pomegranate of the underworld, and being unable to remove the curse of death. That fruit forcibly brings one to the underworld…to death. However it happens, there’s no escape once they get inside you.”

Toaru Majutsu no Index New Testament vol.15 ch.4 pt.9