Master of Artoria Pendragon (Alter)

Sakura Matou

FamilyMatou family (born a Tohsaka)

Rin's younger sister, given to the Matou as a child and tormented for years by Zouken's crest worms. She is Rider's true Master, and in Heaven's Feel her bond to the corrupted Holy Grail turns her into the Shadow that devours Fuyuki.