An A-Class Jutsu used by the Uchiha clan in the hit anime/manga series, Naruto. Katon Goukakyuu no Jutsu (translated to Grand Fireball technique) was mastered at the age of 7 by the Sharingan user Uchiha Sasuke. Also, it's currently being used by the Akatsuki member, Uchiha Itachi.
Itachi: "Katon Goukakyuu No Jutsu!"
by Wesley Fisher June 13, 2007