Magic 3

Exactly as Kanata had said, something unusual was happening in the ring. Under Touka's feet, the icy surface created by Frozen Field began to steam. With the Joules of energy created by a lightning user's manipulation of vast electric power, Touka was overriding Frozen Field. And raising Narukami, she aimed its point at Shizuku.

Shizuku certainly felt a heart-piercing blood thirst from the clearly shining sword-point, and her expression stiffened. However, the reason for Shizuku's expression stiffening wasn't only that pressure.

I don't understand.