A short, overweight student uses the Neuro Link, an evolution of the Nerve Gear, to escape himself from the reality. But his skills in the virtual world brings him to the attention of Kuroyukihime, a popular student who introduces him to the Brain Burst.

The story begins when Berry, an average girl from an average home, meets Hack, a girl who looks like a boy. Charmed by Hack, Berry meets up with the team Hack leads, the Ghost Detectives Club. Members of this club are “socially dead,” working invisibly within the digitally controlled society of Tom Sawyer. As she works with the group, Berry learns about Zero, a mysterious figure who lurks within Tom Sawyer’s underground. She and Hack decide to chase down this figure, and in time, the truth behind the city is revealed...

While looking for the cryptic creator of an innovative augmented-reality game, an investment firm executive meets a woman who runs a hostel in Spain.

People's lives have changed because of VR and AR, and an competitive sport has born from these technologies called CB (Circlet Bout). CB can be competed between two schools and became an e-sport that decides the wealth of the schools. It also became the real ability of the school, which depends on not just the students' academic skills, but also on the data based on the sport ability, art, skills, etc.