My Sister is Kushina

For twenty years, Uzumaki Kadō lived in the shadows—awakening the Sharingan at three, mastering forbidden Uzumaki sealing jutsu at six, all while concealing his true power. But when the Nine-Tails attacks on that fateful night, he can hide no longer. To save his beloved sister Kushina, protect the Hidden Leaf Village, and restore the glory of the Uzumaki clan, Kadō steps into the light. Sealing the Nine-Tails, aiding the Fourth Hokage, eliminating threats from within—this is the untold legend of the shinobi who changed everything.