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 Mam