Naruto: Pain and Hope

When she first came to Konoha, Yahizui was a nobody and she was fine with it. When he first became a shinobi, Itachi was sure of his path in life. But fate is a cruel mistress and their lives were never meant to be peaceful. Legacies long-buried and power struggles are just some of the things they will have to face as they walk the line between Pain and Hope. Canon divergent.
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This story will cover the entire span of the series, from before the Uchiha Massacre, up to the end of Shippuuden. There are changes made to canon. They will start small, and snowball from there.
The characters are young in the first part of the story, but that will change. Nonetheless, we are dealing with shinobi, basically child soldiers, so the plot will soon change from light to some heavier themes.