Fate/Prototype character. Sajou Ayaka's older sister, and the main antagonist. She was Arthur Pendragon's Master during the First Holy Grail War depicted in Fate/Prototype: Fragments of Blue and Silver, and then becomes the Master of Beast VI in the Second Holy Grail War.
The following tags are aliased to this tag: sajou_aika, sajyou_aika, and sajyou_manaka (learn more).