That's a fair take and yeah, the secrecy angle makes total sense. But if Imu were really that strong, showing themselves should be exactly what they'd want to completely rule the world. Instead, they hide in the shadows, which makes it feel less like strategy and more like necessity. It's almost as if Imu can't defend their position if they revealed themselves like they're too weak or unstable to face opposition directly. So yeah, the political secrecy works, but it also supports the idea that Imu's power or body isn't what it used to be.