window, he will fall in love with that female. But it will bring pain, for the love will end up like the tragic Greek myth of Orpheus and Eurydice. Julius, Isaak, and Klaus are tied to the legend of the window. And there are other people who are tied to this legend as well. In the shadow of the legend of the window, the four parts long story opens. Part 1 - The Secret of the House Ahrensmeyer The stage of Part 1 is Regensburg in the Kingdom of Bayern, Germany, 1903 to 1905. Julius is a girl. Her mother Renate was a concubine of Julius' aristocratic father Ahrensmeyer. Renate was abandoned by him when she had Julius. For revenge against the Ahrensmeyers, Renate gave her daughter a male name Julius and raised her as a boy. After the death of Ahrensmeiyer's wife, Julius and her mother are accepted into the Ahrensmeyer house, and since there are no other male children, Julius becomes heir of the Ahrensmeyers. Julius learns piano from her earliest days, so she enters the Saint Sebastian school as a boy when she is 15. Julius spends her school life with friends Isaak, Klaus and other students. But the legend of the Window casts a shadow on her mind since she is a girl, and she starts feeling a kind of love toward Klaus, a manlike, yet mysterious student. There are conflicts between the rich and the poor, the noble and the common. The Ahrensmeyer is the old aristocratic house. The newly rising merchant house Kippenberg is a rich family, while the Ahrensmeyer's is declining. Moreover, strange and terrible events take place to the Ahrensmeyers in succession. There seems to be some secret with the Ahrensmeyers, something that may have ties to the German Empire and Russian Empire. Part 2 - The Road of Isaak as a Pianist More of the secrets of the Ahrensmeyers are unraveled, but in the course of the search, Klaus, real name Aleksei Mihailov, suddenly disappears, having returned to his homeland, Russia. Julius, now having fallen in love with Klaus, follows him to Russia. Isaak remains alone in Regensburg, but is later invited to the Vienna Music Academy, and becomes a student there. Thus Part 2 begins. The stage of Part 2 is Vienna, the capital of Austria, 1907 to 1920. The protagonist is Isaak Weisheit. In Vienna, Isaak meets various people.