Mi-ra Yoo

Yoo Mi-ra is the 25th Master of the Moon Light Sword Style. She was invited to participate in the God Of High School Tournament.
During the World Tournament and RagnarÖk, she received Original Greed and through it Ultio R bequeath her Ok-hwang's physical power (which he stole previously). Due to that, Sang Man-deok recognized her as Jade Emperor's successor. In addition, she also received Gáe Bolg from Seo Han-ryang, 27th Leader of National Assembly of the Homeless, and chosen by the five head "family" to become the 28th Leader.

17 years after RagnarÖk, she becomes one of The Six and leader of Neo Nox, a merger of National Assembly of the Homeless and Sang Man-Duk's faction of Nox.

(Source: God of High School Wiki)