Answer
In the visual novel and anime series "Fate/stay night," Illyasviel von Einzbern is a central character voiced by the talented voice actress Noriko Shitaya (Japanese) and Kate Oxley (English). Illyasviel, often referred to as "Illya," is the younger sister of the main character, Shirō Emiya. She possesses magical abilities and is deeply connected to the Holy Grail War, a conflict among magi and their heroic spirits.