Yuusaku manages to capture the the Mysterious Lifeform as he pursues the hacker group "the Knights of Hanoi." To defeat the Knights, he logs in to the VR space "LINK VRAINS" as "Playmaker" and challenges them to a Duel with the Mysterious Lifeform as a hostage.
...you'll suffer flashbacks when 
returning from LINK VRAINS...
wirst du Flashbacks erleiden,
wenn du aus LINK VRAINS zurückkehrst,
tendrás flashbacks
al salir de LINK VRAINS
vai sofrer flashbacks quando
 voltar da Link VRAINS