Guts Rasengan

Remembering Jiraiya's words about never abandoning his ninja way, Naruto creates a fully charged Rasengan, but increases its mass and raw force. It has shown enough power to blast away an entire wall of a fortress and even decimate it in a matter of minutes. Unlike a normal Rasengan, which fades away after striking its target, this version does not disappear until Naruto was finished destroying the entire fortress. This technique can be compared with the Big Ball Rasengan having many similarities, except being much smaller.