The Audi R8 is a sports prototype developed with the aim of competing in the 24 Hours of Le Mans endurance race and has won the overall Le Mans title five times. The R8, which continued to win in the gruelling Le Mans race while inheriting the basic design of the car's body and engine, is one of the most successful cars in the history of the 24 Hours of Le Mans endurance race, which has been running since 1923. The R8 is a mid-ship layout sports car released in 2006 by Audi, the reigning endurance race champion of the 21st century, bearing the name of the glorious R8. Although in appearance and mechanism the R8 is a production car that is completely different from the Le Mans-winning R8, both cars were developed based on the same design philosophy, with a driving position that is less fatiguing, a good ride quality and easy handling characteristics, all of which are shared with the racing prototype R8. The R8 road car was developed and released according to the same philosophy as the R8 racing prototype, with a less fatiguing driving position, better ride comfort and easier handling characteristics.

The year is 2046, in a world where much of life takes place on a virtual network through the use of mobile terminals known as neurolinkers. However, no matter how far the times have progressed, "bullied children" have not disappeared. ・・・・・・ Haruyuki was one of those at the bottom of the school caste. He was spending his dark and depressing days in a corner of the local internet, just playing squash games, One day, of course, he was approached by the most famous person on campus, Kuroyukihime. 'Wouldn't you like to go even further, boy? She entrusts him with the mysterious programme Brain Burst and teaches him the secrets of the Accelerated World, and Haruyuki decides to fight as Kuroyukihime's 'knight'. ・・・・・・

Vice-president of Umesato Junior High School. Known as 'Kuroyukihime' for her beautiful appearance. She has excellent grades, but in fact has a clumsy character. She led Haruyuki, the protagonist, into a struggle in the virtual world.