Guts Rasengan


 * Name: Guts Rasengan (Japanese: Dokonjou Rasengan, Literally meaning Guts Spiraling Sphere)
 * Type: A-Rank, Offensive, Short Range (0-5m)
 * User: Naruto Uzumaki
 * Debut (Movie): Naruto Shippūden 2: Bonds

Remembering Jiraiya's words about his guts to never abandon his nindou and using high amounts of chakra, Naruto creates a fully charged Rasengan increasing it's mass and raw force. It has showed enough power to blast away an entire wall of a fortress and even decimate it in a matter of minutes. Due to it's great power, Naruto uses a shadow clone to help him hold the sphere. This technique can be compared with the Great Ball Rasengan having many similarities, except being smaller.

Speculations
It was believed after the release of the movie's trailer that this was actually the Wind Release: Rasengan, due to it's leaking rotating chakra and green color appearance.