The town that developed the newest network - Den City. There, in "LINK VRAINS," the VR space managed by SOL Technology, people Duel day and night. Our hero, Fuji Yuusaku, is a cool high schooler who posses outstanding powers of observation.
I already know about Speed Duels?
Wusste ich bereits über
Speed-Duelle Bescheid?
¿Ya conocía los Duelos de velocidad?
Eu já sei o que são 
Duelos Relâmpago?