The female swordsman, Yuris, is Guest's childhood friend and former rival. In the past, they were close, playing and training together. As they reached adolescence, they naturally drifted apart, and their rivalry intensified. During that time, Guest was bullied by a group at the swordsmanship academy who were jealous of his skills; they broke his father's keepsake sword. After punching them in retaliation, Guest was suspended and stopped attending school altogether. He gave up the sword and school, eventually finding work as a laborer in a gold mine. Yuris, meanwhile, rose to fame as the ace of a global peacekeeping knight order. One day, a scandal involving the owner of the gold mine where Guest works came to light. Suspecting collaborators among the workers, the knights intervened. Defenseless workers are being neutralized one after another. Leading the charge is Yuris. As if she knew Guest was there, she subdues him and steps on him, branding him the true culprit. Claiming she will conduct a private interrogation, Yuris takes Guest away. The innocent Guest is left in total confusion.