Naruto: I'm Nine-Tails and My Host is Kushina

Mikoto thought.

She had read about the phenomenon while going through an Uchiha clan document a few days ago.

This is a sign!

Mikoto could barely recognize people or objects within a few meters. Her vision was failing rapidly. She could only walk slowly, feeling the effects take hold of her.

This was the price of the Mangekyō Sharingan!

Mikoto had seen this documented in the ancient texts of the Uchiha clan. Moreover, Kurama-sama had warned her about it when she first awakened the Mangekyō Sharingan.

The power of these eyes came with a terrible side effect.

Eventually, they would lose their light.

After awakening her Mangekyō Sharingan, Uchiha Mikoto had used its power frequently. It had been her greatest weapon in the internal conflicts of the Uchiha clan and during the brutal battles of the Third Great Ninja War.

She had even summoned Susanoo, pushing her eyes to their limits.

Now, the consequences were catching up to her. She had expected this. She had known it would come. And yet, accepting it was another matter entirely.