In 2046, people can access a virtual network known as the Neurolinker via their cellphone terminals. A perpetual victim of bullying, middle school student Haruyuki spends his time absorbed in games in a corner of his local network. One day he is approached by the most famous girl in his school, Kuroyukihime (Black Snow Princess). She gives him a strange program called Brain Burst that has the power to "accelerate the world."
Despite Ryuji Takasu's gentle personality, his eyes make him look like an intimidating delinquent. Class rearrangements on his second high school year put him together with his best friend, Yusaku Kitamura, and his hidden crush, Minori Kushieda. Along with these two comes Kushieda's best friend, Taiga Aisaka. Her delicate appearance contrasts with her brutal personality. Secretly in love with Kitamura, Taiga agrees to help Ryuji with his love interest as long as he helps her get closer to hers.