Accel World (アクセル・ワールド) is a story about the protagonist Haruyuki Arita (有田 春雪) middle school student who is plump and short, and he was harassed regularly, even his avatar image in the online world is also being forced to use as a fat pink pig. He had no confidence in itself, but the only thing he was proud that is the ability to play a video game.
One day his life totally changed when he met with senior Kuroyukihime (黒雪姫) who gave him the Brain Burst program which allows him to see the world at the slowest time through the virtual world, which was simulated with various data, but surely it's not over yet because those who have the Brain Burst program will have to compete with each Burst Linker. They have to fight to keep the number of points that can be used with Brain Burst and to increase their level even higher. Moreover, the true identity of senior Kuroyukihime is also a surprising mystery.