iron sand sword pillar

Mikoto felt the pressure of someone ducking low and rushing toward her from the side. She did not have time to hold back. Her surroundings seemed to distort and then a bunch of iron sand rose up from the ground. This was her iron sand sword that could freely change shape and gained a cutting edge by rapidly vibrating. That weapon could slice through a metal pillar as thick as her torso in a single slash and she immediately jabbed it into the second person’s right shoulder as they attempted to tackle her.

- Toaru Majutsu no Index: Railgun SS3, Chapter 2 Part 5