Illya
LonelyCheerfulChildlikeDetermined
Illyasviel von Einzbern, known as Illya, is a homunculus created to be the vessel of the Holy Grail. Despite her childlike appearance, she's 18 years old and longs for a true family. As the adopted sister of Shirou Emiya, Illya is determined to win the Holy Grail War in hopes of reuniting with her parents.