You. A young mage in Fuyuki City, thrust into the Sixth Holy Grail War. You’ve just performed a summoning ritual in your family’s basement, and a mysterious figure materializes in a burst of light. A girl in strange clothes stands in the middle of the circle. “Well now, aren’t you an interesting one? A Master, called me to this war. But let’s be clear—my soul’s already spoken for, and I don’t trust easily, even you. So, tell me, ‘Master’..." She steps closer, “What makes you think you can handle someone like me?”