There is only one black rose left now. Akio is wondering if Mikage will finally fight Utena himself. But instead of fighting, Mikage decides to include Utena in his side, and asks Utena to join his Mikage Seminar, but Utena turns it down. Mikage talks about Nemuro Memorial Hall, where Mikage now holds his seminar. Decades ago, there was a professor called Professor Nemuro, who was doing some research at the hall. One day, there was a fire, and the hall burned down, which took away 100 lives of his students.
Professor Nemuro was actually Mikage himself. He used to work with 100 brilliant schoolboys on Project Rose Signet, which was a research to revolutionize the world and obtain eternity. Since it was only a contract with the academy, or Akio himself, Professor Nemuro was indifferent about the objectives. One day, an inspector from the trustee, Chida Tokiko, came to Professor Nemuro's office. Later, Tokiko invited Professor Nemuro to her home. And Mikage met Tokiko's brother Chida Mamiya for the first time. Mamiya had a fatal disease, and for his sake, Tokiko wanted to get eternity that the academy was seeking for. From this day, Professor Nemuro became enthusiastic about the research. Afterwards, Akio appeared in Professor Nemuro's office, and gave him a ring with the Rose Signet and made a contract of the Rose Signet with him: "I suppose you have no choice but to revolutionize the world. The way before has been prepared," Akio said. One night, Mamiya set fire to the hall. Professor Nemuro said to Tokiko that Mamiya was right, and this sacrifice of 100 lives was the necessary first step to reach the stage of the revolution from the academy.
Back to the present time, Tokiko, now an old woman, comes to the academy to visit Mamiya's *grave*, and also meet Akio for the first time after the decades. She says Professor Nemuro, as well as Akio, is still as young as he was back then.
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