Fujimura Taiga

Fujimura Taiga is an English teacher at Shirou's school, homeroom instructor of Shirou's class and the supervising teacher for the archery club. She is widely called "Tiger", a nickname she dislikes ("Taiga" and "Tiger" sound similar in Japanese), though Shirou refers to her as "Fuji-nee" (older sister Fuji).

After Kiritsugu died, Taiga became Shirou's guardian and has been living with him for several years. Taiga and Shirou are very close, and she regards him as a younger brother.