It's the Fourth Stage, Ya Know~

Synopsis

Nine finishes the blueprints for Robin's new Bey, and Multi decides to stay behind at Komaba Sushi to focus on Bey crafting. When they reach the Fourth Stage venue, what spreads out before Persona is a space like something out of a video game. The one who appears there is Seven Cross, as a 4X avatar. The way to face Seven is the latest full 4X Bey battle: no actual Beys are used — you just raise your launcher and shoot, and an AI does the calculations and recreates the Bey battle in 4X. An astonishing system!