Yuuki Konno is a major character in the popular anime/light novel/manga series, Sword Art Online.
She is the secondary protagonist of the Mother’s Rosario Sub-Arc and the main protagonist of the Sisters' Prayer side story in the Sword Art Online series. She is one of the three founding members, and the current leader of the «Sleeping Knights» guild in ALfheim Online, as well as Asuna's best friend.
Yuuki is voiced by Aoi Yuuki in Japanese, and Erica Mendez in English.