Raios Antinous shouted out loud and his sword followed as it
growled—

Clink! He heard the noise of a heavy collision. The blade did not
come for his head no matter how long he waited. Eugeo slowly
raised his head, and then, he saw.

Below Raios' sword, swung half the way downwards, was another...
long sword with a jet-black blade stopping its advance. The sleeve
that covered the arm extended fully from behind too, was black.
The hair drenched in rain of the intruder likewise—was black.

(Alicization Turning, 159)