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

Transmigrated into the Naruto universe as the Nine-Tails, he awakens within Uzumaki Kushina's body—no longer a feral force, but a conscious being with intellect and dominion over his own destiny. Armed with newfound sentience and the strength to reshape the future of all tailed beasts, he challenges the very foundations of their servitude.

Madara: "I never imagined my Rinnegan could be shattered by the Nine-Tails."

Hashirama: "The world shifts. Once I commanded the Nine-Tails; now it commands me."

Uchiha Mikoto: "Kushina, I had no idea such overwhelming power dwelled sealed within you."

Uzumaki Kushina: "Every tail of the Nine-Tails resonates through me with distinct energy."

In this moment, the Nine-Tails rises as the embodiment of all tailed beasts united.

"We tailed beasts refuse to be shackled!"