Dark Sakura, or Sakura Matou in her corrupted form from Fate/stay night: Heaven's Feel route, is the younger Tohsaka sister adopted into the Matou family. Enduring brutal abuse and modifications by Matou Zouken, she becomes the vessel for Angra Mainyu, transforming from a gentle, passive girl into a powerful, malevolent entity known as Dark Sakura. Her body mutates with black tendrils, granting immense magical power as the Shadow and Black Grail. Driven by suppressed trauma, jealousy toward her sister Rin, and obsessive love for Shirou Emiya, she unleashes destructive shadows on Fuyuki City, shifting from victim to catastrophic threat. Her arc explores tragedy, distorted family bonds, and the horrors of the Holy Grail War.