In the 2022...

"Yo bud, long time no see! It's me, Klein!"

A huge castle made of stone and steel floating in an endless sky.

"I'm the best craft woman in the entire SAO. Liz's the name!"

That was all this world was.

"Silica, the Dragon Tamer, is here!"

It took a varied group of craftsmen one month to survey the place; the diameter of the base floor was about 10 kilometers—large enough that the entirety of Setagaya-ku would fit on it. Above, there were 100 floors stacked directly on top of each other; its sheer size was unbelievable. It was impossible to even guess how much data it consisted of.

"I am the Vice Commander, Asuna"

Inside, there were a couple of large cities, countless small towns and villages, forests, plains, and even lakes.

"Agil's the name and welcome to my shop"

Only one stairway linked each floor to another, and the stairways were in dungeons where large numbers of monsters roamed, so discovering and getting through was no easy matter.

"Wait for me, Senpai!"

However, once someone broke through and arrived at a city on the higher floor, the Teleport Gates there and in every city in the lower floors would connect, making it possible for anyone to move freely through these levels.

"«Starburst...Stream!»"

Under these conditions, the huge castle had been steadily conquered over two years. The front line is currently on the 74th floor.

"Leave this to me, and go after him. We're buddies, after all"

The name of the castle was Aincrad; a floating world of battles with swords that had engulfed approximately ten thousand people.

"Finally...we can end this, Kazui"

Otherwise known as…

"Like hell you will! Let's finally settle this, once and all, Elan!"

«Sword Art Online»

...

No. This is not the SAO people know. It resembles the original story, but at the same time it is indeed different, walking a parallel path close to the original.

Two worlds that follow the same adventures, share the same characters but at the same time, their paths are different.

Yes.

This is the story of redemption. A story of adventures. And a story of love.

This is…

«RE;Sword Art Online»