nose piercing

Kamijou inhaled deeply and sprang up from his position under the business desk. Along
with his sudden rise, he swung the bulletproof glass to the side.
A large man with a nose piercing looked at him in shock.
An instant later, the man’s face disappeared from Kamijou’s field of vision. With a dull
noise, the Skill-Out man’s body was knocked to the ground. The metal piercing must
have ripped from his flesh, because it stayed oddly in the air just a bit longer.
One down.

- Toaru Majutsu no Index Volume SS1, Chapter 4 Part 8