Lady Yae. Shingen had been a Warlord of great domestic skill and competent military leadership. 1 December 1845 14 June 1932 also known as Yamamoto Yaeko 山本 八重子 was a Japanese female warrior nurse and scholar of the late Edo period who lived into the early Shōwa periodSkilled in gunnery she helped defend Aizu during the Boshin War earning her the nickname of the Bakumatsu Joan of Arc.
I beleive that is it import to mention her somewhere. According to the Genshin Impact wiki she is an old friend of Morax and Baal and is acquainted with Ganyu. Yae Miko was shown during the Livestream and the trailer of 20 UpdateBased on her appearance during the recent 21 Livestream in the image above notice that her vision Electro Vision is dangling above her while talking to the Traveler.
According to Mihoyos description of Yae Miko her elegant and beautiful appearance belies an intelligent and cunning personality.
Lady Ninja Yae is a character version of the card Lady Ninja Yae. Genshin Impact Yae Miko Voice Actor - English and Japanese. Brand new This was given by the LOVELY SAGACIOUS LADY YAE MIKO. She is in charge of everything here.