Amaterasu (literally "Shining Heaven"), is a technique used by Uchiha Itachi while enabling the Mangekyou Sharingan. It is named after the Shinto sun goddess, Amaterasu. This jutsu is fire-element ninjutsu of the highest order and creates unquenchable jet-black flames said to be as hot as the sun and capable of burning for seven days and seven nights, as well as through any material.
Jiraiya: There is no escape. They're trapped in the esophagus of a fire-breathing rock toad from Myouboku Mountain.
by Kazama Arashi July 10, 2008