—I... recorded the battle with a replay card. It shows how Ivory Tower turns into Black Weiss. The battle of the Black Legion "Nega Nebulus" against the White Legion "Oscillatory Universe", which unfolded on an unlimited field, reached an unprecedented intensity of passions. The Black Legion did everything possible to prove the connection between the White Legion and the Acceleration Research Society, but the battle still ended in defeat for Haruyuki and his friends - they did not find a single clue. But in a time of despair, the replay card offers hope of breathing new life into the plan. The fourth Conference of the Seven Kings is convened. Kuroyukihime heads there to corner the White Legion using a replay that Chocolate Papette recorded. Meanwhile, Haruyuki, who is eagerly awaiting the results of the conference, is contacted by someone whom he considered an enemy...