Kuroyukihime reflects on how she recruited Haruyuki Arita to the "Brain Burst" app, which enhances cognitive abilities to create a slow-motion effect. Haruyuki has become a celebrated player and aided Kuroyukihime in reaching the game's highest level. However, during a battle with Nega Nebulus, a major in-game storm causes Haruyuki and his friends to be removed from the program. Kuroyukihime realizes that any security camera failures in Tokyo are connected to the Brain Burst issue. Therefore, Nega Nebulus calls for assistance from other legions to identify and fix the problem.