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.
But five years ago, due to Hanoi's attacks...
Doch Ignis, die damalige KI, hat beim Angriff
der Ritter Hanois vor fünf Jahren
Pero debido a los ataques
de Hanoi de hace cinco años,
Mas cinco anos atrás, devido
 aos ataques dos Hanoi,