Batman Ninja vs. Yakuza League

The Bat Clan has reappeared in the modern era only to find that Japan has vanished, replaced by a colossal floating island named Hinomoto looming over Gotham City. Perched atop this mysterious landmass are the Yakuza, a formidable gang of metahumans masquerading as the Justice League, ruling with ruthless power and devoid of any sense of honor or compassion. Now, the Dark Knight and his comrades must join forces to rescue Gotham from this new and dangerous threat before it's too late!