The female Sheido looked at Osahar, didn't answer, and put her hand on the hilt of her sword in anticipation. "I was right," Osahar thought to herself. The Unique Twin is Sheido's secret technique, which she had read about while studying forbidden magic. This technique was used between two people, a man and a woman who were not related by blood. It was a blood oath, all emotions and physical pain would be divided between the two, especially during the moment of death. If one person wished, all powers and skills could be transferred to the other. However, this technique was not without flaws, these two people from the time they took the oath until the time of their death could not be too far apart, could not have physical pleasures and would always remain strong-will, or else they would suffer from serious side effects. In this situation, the other man still retained a piece of his life because the man was sharing half the excruciating pain, buying more time to wait for assistance.