My sword let out a very weak light that still remained. At the
same time, my body flashed through at a speed that far exceeded the
physics of this world. It was as if someone was pushing me with an
invisible hand from behind.

The first strike that came swinging upwards from the bottom
right position grazed past the enemy’s left leg and stopped his motion.

The second strike that swung from left to right horizontally sliced
the chest plate of the armor and made a light cut on the flesh inside.

The third strike that quickly swung down from the top right side
sliced apart the left arm the enemy raised to defend himself from
slightly below the elbow.

The fresh blood that came out from the sliced off surface was
shown as pitch black under the bluish-white light. The left arm of the
goblin that flew off, *kurukuru* fell into the lake on the left side, letting
out a heavy splash.

—I won!

As I firmly believed this, I was thoroughly shocked.
That attack just now... the three-continuous-strike sword skill for
one-handed swords, «Sharp Nail», wasn’t just an appearance, but in
fact it really happened. In the midst of slashing, the blade let out red
trajectories in the air, and my body was accelerated by an invisible
force. In other words, it was «System Assist» with a «Light Effect».

(Alicization Beginning, 312)