Sayuki Kurobane (黒羽 紗雪 Kurobane Sayuki) is a heroine of fortissimo EXS//Akkord:nachsten Phase. She only speaks when necessary, but when she does her messages are direct and to the point. She deals with family matters differently, however, showing her soft side easily to the point that most characters are taken aback. In addition, she also has brother complex towards her brother, Reiji Yoshino. She views Reiji as her most important family and would go to any extend to protect him, to the point that she takes things too seriously at times. On the contrary however, she is on bad terms with Momiji Satomura due to Momiji's attempt to kill Reiji early in the story. As the story progressed, Momiji developed a more condescending attitude towards her, but Sayuki still stayed on high alert around Mo