Asuna is the main female protagonist of the series; her game alias is the same as her real world name. Asuna is a friend of Kirito and is a sub-leader of the Knights of the Blood Oath, a medium-sized guild acknowledged as the strongest guild in Aincrad. Being one of the few girls that play SAO and extremely attractive, she receives many invitations and proposals. Asuna is a strong-willed, accomplished player known in-game as the "Flash" for her extraordinary sword skill.
Source from Wikipeida
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