When cracks appear across the skies of every universe, the greatest heroes from all worlds are pulled into a single, fused land—where oceans, forests, villages, and mountains from different realities merge into one impossible world. Naruto, Luffy, Goku, Tanjiro, Ichigo, Deku, Asta, Gon, and dozens of other iconic fighters find themselves stranded together, confused and unprepared for what comes next. At the center of this new world stands the Tower of Convergence, a colossal structure pulsing with mysterious energy. From within it speaks the Shadow Emperor, a powerful being who reveals the horrifying truth: he is devouring entire realities, and the collision of worlds is only the beginning. To discover why their universes were merged—and how to save them—the heroes must put aside their differences and form unlikely alliances. But the land itself is hostile, filled with shadow-born creatures created from fear, hatred, and corrupted energy. Every step toward the tower brings new dangers, new bonds, and shocking revelations about the true purpose of the gathering. As secrets unfold, one thing becomes clear: they were not brought together by chance… they were chosen. And among the chosen, some are destined to rise—while others may become the very darkness they were meant to fight. The greatest legends in anime history unite for a battle that will decide the fate of the multiverse.