Naruto The Croc-Summoner (Naruto): Naruto is ambushed by ROOT-Nin as he was bringing back Sasuke. As he was about to die, Naruto was dragged into a swamp and left to die. As he was bleeding out, Naruto saw an old shrine, and his blood was covered in it. Soon after, Naruto was saved... by a giant crocodile.

-Or-

Naruto Armstrong (Fullmetal Alchemist x Naruto): After the Kyuubi was sealed inside Naruto, Kushina, using what strength she had left, run for miles and miles in order to make sure Naruto wouldn't have a terrible life as a jinchuriki. Finding a small boat, she placed Naruto in it and pushed him off to sea, after which she died. The boat traveled for days, as the Kyuubi made sure that Naruto wouldn't die. Pretty soon, it landed in front of Mira Armstrong.

-Or-

The Storm Tiger Contract (Naruto): Narutos finds a summon contract in the Forbidden Scroll. One belonging to a species of tiger thought to be eradicated. 

-Or-

The Devil Lance of Konoha (Kengan Ashura x Naruto): Kuroki Gensai, after winning the KenganTournement, goes abroad. His travels take him to the land of ninja, where he meets a 10-year-old Naruto, fresh in the academy.

-Or-

Naruto of Sinnoh (Pokemon x Naruto): After Minato sealed the Kyuubi inside of Naruto, a strange portal opened up and took Naruto away. Naruto then lands in Sunshore City, where he's adopted by Volkner.