Guardian in the Shadows

Naruto Namikaze had his life turned completely upside down upon the birth of his younger sister, Naruko, which coincided with the death of his parents. With his only purpose now being to protect, Naruto will spend his life ensuring that Naruko remains safe, no matter how it is done. Akatsuki!Naruto, Older!Naruto, Powerful!Naruto, Smart!Naruto, NarutoxSmallHarem, BigBrother!Naruto.