Choi Yong Jik, in the past, a model of well-being: a luminary in the field of healthy nutrition and cheerfulness, winner of the highest award of a sports teacher. Alas, his personality was once combined with a strong musculature… Transported into the existence of Prince Su Yang, a descendant of the illustrious King Xie Jeong, his muscles disappeared as if by magic. Baffled, Yong Jik cherished the hope of meeting with Ruler Se Jong. A surge of excitement swept over him at the thought of being able to see the legendary monarch, regardless of whether it was a dream or a tangible reality. What happened?! Is the famous Xie Jong in a state of fullness, suffocating? In front of him was the appearance of King Xie Jong the Great, and not the image of health that he imagined. The monarch seemed burdened with excess weight, which hinted at suffering from diabetes. The courtiers around him also suffered from ailments and a weakened physique… Young-Jik, a veteran of physical training, the pride of an entire community devoted to fitness, felt a fervent zeal awaken in him. With renewed determination, he proclaimed, “Look, should I usher in an era of health in the Joseon Kingdom?!”