In the "Ended World," what future will they grasp in the end? Suddenly attacked by the monster "Shiin," people are assaulted, and the world has come to an end. The girl, Minato Yuki, who survives using the magic left by her father, reunites with her "one and only" friend, Sakaki Honoka, whom she parted ways with. They decide to help search for Honoka's missing sister, Haruka. With the cooperation of the "Steel Witch" Kujo Yami, whom they meet in Kyoto, and her niece Haguri, who commands golems, Yuki and her friends gradually get closer to the truth of the apocalypse. In search of further information, Yuki, Honoka, and Haguri decide to head to Tokyo, where the headquarters of the Japan Magician's Alliance was located. Along the way, they recharge their spirits at an abandoned inn and a hot spring, reaffirming their bonds. As if guided, they arrive at Shibuya's scramble crossing, where the girls learn an unexpected truth and are faced with a painful choice——. What future will Yuki and Honoka, who were once separated in the past, grasp in the "Ended World"? A girls' survival story, here it concludes!