wooden wheel 2

Quite a few wooden shards had struck him, but they weren’t actual blades in the first
place, so his wounds were shallow.
But right after that...the slender shards piercing his skin suddenly began twisting up and
down by themselves.
“Gh...gaaaaahhhhhhhhhhhh?!”
As Kamijou screamed, as though pulling out an ax wedged in a big tree, the fragments
began falling out one after another. The blood-splattered fragments returned to the tall
sister as if by magnetism, and like a jigsaw puzzle being assembled, they re-formed the
original carriage wheel.

- Toaru Majutsu no Index Volume 7, Chapter 3 Part 1