Irukaxobito Stories

Ten people have come back to the past to save the future... and all those in it, but when Hiruzen noticed that some things weren't adding up, he starts sending them on "bonding missions." Will they be able to find out the truth of the dark future these people are from, and are willing to prevent at any cost. What is the darkness in their pasts and why are they all suddenly so close? Disclaimer: I don't own Naruto, just my storyline