Voir Accel World, Season 1, Vol. 1 - Episode 1

Arita Haruyuki. A young boy whose chubby appearance and shy disposition makes him a constant target for school bullying. Ashamed of his miserable life, Haruyuki can only cope by indulging in virtual games. That all changes when Kuroyukihime, the most popular girl in school, introduces him to a mysterious program called Brain Burst.