A huge castle made of stone and steel floating in an endless sky.
That was all this world was.
It took a vagary group of craftsmen three months to survey the place, the diameter of the base floor was about 10 kilometers—large enough to fit the entirety of Setuguya within. Above there were 100 floors stacking straight upwards; its sheer size was unbelievable. It was impossible to even guess how much data it consisted of.
Inside there were a couple of large cities along with countless small scale towns and villages, forests and plains, and even lakes. Only one stairway linked each floor to another, and they existed in dungeons where large numbers of monsters roamed; so discovering and getting through was no easy matter. However, once someone made a breakthrough and arrived at a city of the upper floor, the <Teleport Gates> there and of every cities in the lower floors would be connected making it possible for anyone to move freely through these levels.
With these conditions, the huge castle had been steadily conquered for two years. The current front line is the 34th floor.
The name of the castle was <Accra>, a world of battles with swords that continued floating and had engulfed approximately 6 thousand people. Otherwise known as...
<Blade Arts Online>
No one would understand why I locked all of these people inside the game. They can never understand my point of view. Oh how pitifull humans are indeed. Even though there should be no worries. This test would show the final results of the pitiful race known as the 'humans'. This test would show if the humans were indeed worth of calling a race. As the stubborn and greedy race the humans were known as, no other race would ever acknowledge them. They should be gratefull. I am representing the humans after all. Even though everyone has lost faith in these excistences called human, which even I did lose the faith in to. I will give humans the final test.....
The game has just begun.