Hel freeze

A girl in a dress stood in the boat.
The dress may have originally been as pure white as a wedding dress, but more than a third of it was stained red and black as if splattered in her enemies’ blood.
And the same was true for the girl herself.
Her skin had stiches running in every direction like a battered stuffed animal that had been repeatedly repaired. And when the skin had been grafted onto her, it appeared there had been little concern over the moisture. Some of her skin had the youthfulness of a young girl’s skin, some of it was as wrinkled as an old woman, and some of it was discolored a dark blue. This added to the cobbled together impression she gave off.
“Here they are,” she said as lightly as someone who had spotted the person they were waiting for in front of a train station.
The girl casually pulled out a small kitchen knife and threw it toward the ocean surface.
The change only took a few seconds.
The ocean water for over 100 kilometers around the small boat completely froze into a thick layer of ice.

-Toaru Majutsu no Index New Testament Vol. 8 Ch. 4