Ring | Code Geass

Code Geass: Lelouch of the Rebellion often referred to simply as Code Geass, is a Japanese anime television series produced by Sunrise. Set in an alternate timeline, it follows the exiled prince Lelouch Lamperouge, who obtains the "power of absolute obedience" from a mysterious woman named C.C. Using this supernatural power, known as Geass, he leads a rebellion against the rule of the Holy Britannian Empire, commanding a series of mecha battles. (from Wikipedia)