Rasengan, Narutopedia

The Rasengan is a jutsu that takes form as a spinning ball of chakra, invented by Minato Namikaze. Minato came up with the idea for this technique after seeing a Tailed Beast Ball being used. Because his lover, Kushina Uzumaki, was a jinchūriki, she would inevitably be deployed to fight opponents who would use Tailed Beast Balls against her. Minato therefore wanted to develop a technique that Kushina could use to match against those opponents, which also worked with her chakra volume as a jinchū

Finally! Naruto using the lava style rasenshuriken, a SPSM power. : r/Boruto

Tailed Beast Rasengan, Narutopedia

Which is the strongest rasengan? : r/Naruto

What is the most terrifying jutsu to be on the receiving end of? (Doesn't have to be one in the picture) : r/Naruto

A Complete Timeline Of Every Naruto Episode, Arc, and Season

Which is the strongest rasengan? : r/Naruto

The History Of The Rasengan (Naruto)

Lingering Snow, Narutopedia, Fandom

In Naruto, can anyone use Rasengan? Do you need to have a good amount/lot of chakra or need to be able to use a certain nature to use the Rasengan? - Quora

Runt Ball Rasengan, Narutopedia

Ultra-Big Ball Rasengan

Five Most Powerful Boruto's Jutsu in the Anime and Manga

Rainbow Rasengan

Rasengan, Wiki