Kenji, a 23-year-old final-year medical student from Okinawa, Japan, is on the brink of achieving his lifelong dream of becoming a doctor. Known for his serious, responsible nature and unyielding dedication to his studies, Kenji has always prided himself on being a calm, collected person. But beneath his disciplined exterior lies a deep compassion for others, and he is always ready to lend a hand to those in need. His future seemed secure—until the moment he woke up in a world unlike any he had ever known. Suddenly thrust into a war-torn land, Kenji finds himself in a medieval realm caught in constant conflict, where kingdoms and nations clash in bloody battles. The land is inhabited by knights, mages, and warriors, all entrenched in the chaos of a never-ending war. With no memory of how he arrived and no idea of how to return home, Kenji is forced to navigate this dangerous world, relying on his medical knowledge to survive. Despite the unfamiliarity of his new surroundings, Kenji's expertise in medicine becomes a precious commodity in a world filled with injuries, diseases, and magical curses. In time, Kenji is granted the class of "Doctor" by a mysterious force, marking the beginning of his journey to heal not only physical wounds but the deeper scars left by a world ravaged by conflict. As Kenji becomes entangled in the power struggles of various factions, his skills as a healer may be the key to changing the course of history—but only if he can learn to survive in a world that seems determined to destroy him. Will Kenji find his place in this new world, or will the shadows of war claim him before he can fulfill his destiny as a healer? The answers lie in the hands of a man from another time, forced to adapt to a life of magic, violence, and uncertainty.