Yasufumi Einzbern

Yasufumi Einzbern was a member of the Einzbern Family, and the first to take part in the Holy Grail War. She was the Master of the Lancer Class Servant during the First Holy Grail War of Fate/Eternity; due to the Church not yet existing, Yasufumi, being the most trustworthy of all the masters, also served as the overlooker of the war. She was close friends with Zouken Makiri(Matou), and Nagisa Tohsaka, two other masters in the war.