A battle that connects noble spirits

A virtual world called the "Underworld..."
A young man named Kirito awoke there one day.

There, he met a woodcutter named Eugeo,
as well as many other residents of the Underworld.
Those moments of connection and conflict would challenge
the very rules that govern that world.

Even though you're an AI…
Even though everything in this moment is
simply generated by data…
Still, a certain warmth and pain linger in the heart.

This is the story of the noble spirits of that world.
The battles they fought, the lives they lived.