This is an enormous Rasengan created with Naruto and Shion's chakra, aided by her Mystic Safety Bell. The technique was used to destroy Mōryō.
Trivia
- This Rasengan has a few similarities to the Gelel Rasengan:
- It was made using a special item.
- Someone else helped Naruto make it.
- It was used at the climax of the film to defeat the main antagonist.