Rasengan is a super iconic Jutsu in the world of Naruto and Boruto. The Fourth Hokage, Minato, created it. Afterward, it was passed on to Jiraiya, who taught it to Naruto and passed it to Konohamaru.

The start of Boruto was criticized due to its slow writing ... Moreover, he also kept perfecting the Rasengan as he advanced the technique and created even more lethal attacks.

Naruto mastered the Rasengan, passed it down to others like Konohamaru, and developed new variants. Boruto, Naruto's son, showcases swift Rasengan mastery and multiple powerful variants in combat.