When the dead were summoned back to the Shinobi World through the Impure World Reincarnation Jutsu, their bodies were immortal forms made of dust.
Although they possessed the chakra, memories, and most of the abilities they had in life, certain extraordinary traits rooted in their bloodlines and the essence of their souls could not be perfectly reproduced, such as kekkei genkai.
In a body created by Impure World Reincarnation, a kekkei genkai could only display very limited power, falling short of its full strength in life.
The power of those eyes was intimately bound to their owner's soul, chakra nature, and even unique life energy. It was a reflection of the soul's traits upon the physical body.
A reanimated body was ultimately only a "borrowed" shell, incapable of supporting that true reflection of the soul's essence.
The Pure Land, however, was an entirely different place.
Here, the dead existed as pure souls. Their forms, abilities, and even the "eyes" they possessed were not based on physical flesh, but arose directly from the strength of their souls, their memories, their fixations, and the heights of power they had reached in life.
In a sense, the dead were closer to their true "essence" in the Pure Land.
Thus, for someone as powerful as Madara Uchiha, who had awakened the Rinnegan through his own strength while alive, his Rinnegan truly existed in the Pure Land.
He could use all of its abilities in full, including the eerie, unpredictable "Limbo: Border Jail."
Likewise, other deceased wielders of kekkei genkai could perfectly reproduce the powers they had possessed in life within the Pure Land.
The Pure Land was pretty amazing, wasn't it?
Now, faced with Madara Uchiha's four suddenly manifested Limbo shadows, all poised to strike, Yūji Uzumaki's heart sank. He immediately understood how dire