As the world faces imminent destruction, Illya, known as the world's savior, is confronted with a heart-wrenching choice between saving the world or her dear friend Miyu, whose sacrifice could avert the catastrophe. Opting for a daring response, Illya vows to save both. Amidst a temporary ceasefire, the group finds solace in Miyu and Shirou's humble abode, where Shirou recounts the tale of how they embraced Miyu, a divine being capable of fulfilling any desire. Their tranquil existence as a makeshift family is shattered when the looming threat compels them to reclaim Miyu. Before they can act, Julian emerges, fixated on unlocking Miyu's mystical powers. The intricate bond shared among Miyu, Shirou, and Ainsworth unravels in this pivotal moment.