Niten Ichi-ryū



The is a unique skill of Sword Art Online that is only seen in the Chaos Labyrinth and the Dreamscape Project.

Overview
People have been using swords since the dawn of time. Wielding two weapons at once was unsightly and impractical. However, that is not the case within virtual reality. Or at least, that was what thought when he created Sword Art Online and began creating ALfheim Online as a side project. I have made the Dual Blades skill, he thought. Why not I make a new one that centers around the school of teaching made by ?

And that is how this skill came into existence.

Acquisition
The prerequisite for obtaining this unique skill is to completely max out one's katana skill proficiency. Once this is done, a quest on the 73rd Floor, titled The Old Man on the Mountain, is unlocked. The first person to clear this quest obtains the Niten Ichi-ryū.