Fate stay/night x Fate Grand Order Y/n a normal high school girl died in a car accident. When she opened her eyes she was a kid again, but that's not all she looks awfully familiar. And was more shocking is that she is in her favorite Anime Fate stay/night. And she became Shirou Emiya's Little Sister. The Fate stay/night and Fate/Grand Order are owned by Type-Moon, and ufotable.