Accel World: Infinite∞Burst 6.68
Other Name: アクセル・ワールド INFINITE∞BURST（インフィニット・バースト）
Summary: An online fighting game "Brain Burst" that takes place in a virtual world on the web. The players, Burst Linkers, enjoyed the fight in a world that was 1000 times faster than it really. Haruyuki Arita, who attends private Umesato junior high school, is one of them. Belonging to Koenji-based Negative Nebulous, he was fighting a territorial war in the Shibuya area with Black Snow White, the head of the Corps. The "Transition" that came there, a huge jet-black tornado, and a sudden disconnection of the line. A mysterious phenomenon that shouldn't have happened gradually eroded the Accel World, and in the area surrounded by tornadoes, it became impossible to accelerate. What's happening in Accel World? Haruyuki and his friends confront the black tornado to find out the cause.