Accel World EX vs Accel World

Reverberation A mysterious avatar has hijacked the Umesato Junior High Local Network, trapping students and stripping them of their clothes and belongings. After learning that other schools are facing a similar problem, Kuroyukihime gathers Haruyuki Arita and the other members of Nega Nebulus—one of the Seven Great Legions—to solve the mystery. Vacation Haruyuki is due for a physical re-examinati...

Haruyuki Arita is an overweight, bullied middle schooler who finds solace in playing online games. But his life takes a drastic turn one day, when he finds that all his high scores have been topped by Kuroyukihime, the popular vice president of the student council. She then invites him to the student lounge and introduces him to "Brain Burst," a program which allows the users to accelerate their b...