CODE GEASS: LELOUCH OF THE REBELLION

Code Geass: Lelouch of the Rebellion  often referred to as simply Code Geass, is a Japanese anime series created by Sunrise, directed by Gorō Taniguchi, and written by Ichirō Ōkouchi, with original character designs by Clamp. Code Geass is set in an alternate universe where three superpowers, the Holy Britannian Empire, the Chinese Federation, and the Euro Universe have divided the world between them (with the exception of an independent Australia) and maintain a tentative balance for the first part of the series.

The Holy Britannian Empire is an imperial monarchy and the most prominent superpower within the world of Code Geass, controlling over one-third of the world at the start of the series.
The king of the Britannian Empire Charles is ruling injustly over the people of japan stripping them of their rights and freedom.

Lelouch vi Britannia is an intellectual Britannian prince who was sent as hostage, along with his sister Nunnally, by his father, Emperor Charles zi Britannia, after his mother was murdered, and has vowed to destroy Britannia. Lelouch gains a mesterious power called Geass that gives him the ability to make people obey him.
Lelouch Lamperouge is a seemingly ordinary 17-year-old student at Ashford Academy. In reality, he is Lelouch vi Britannia, the exiled son of the Emperor of Britannia and the late Empress Marianne, forced to flee to Japan after his mother's assassination. When he gets caught up in a battle between the military and Japanese rebels, he gains the power of Geass, allowing him to force others to obey his orders without question, and begins a quest to utilize this power to destroy Britannia under another identity known as Zero. Only in high school lelouch is highly intellegent, and decides to become the leader of the resistance movement against his father The King,  to fulfill his two wishes: to seek revenge for his mother and to construct a world in which his beloved sister Nunnally can live happily.

                       CC a mysterious, immortal, green-haired girl who establishes a contract with Lelouch on the condition that he grant her one wish, to die and gives him his power of Geass, acts as his accomplice.