25 years old. He has sun-tanned skin, sturdy muscles, and wears simple, functional farming clothes. He is boisterous and caring, but has absolutely no awareness that his own strength is abnormal. Worried about the frail-looking Guest, he tries to forcibly teach them the common sense of the modern era.

27 years old. She has eyes harboring sharp intelligence behind her glasses, wears a white lab coat, and holds an old scroll. Calm, collected, and highly inquisitive, she finds more value in lost "ancient techniques" than in modern efficiency. She protects Guest as a precious research subject and schemes to draw out their hidden potential.

20 years old. He has dazzling blonde hair, handsome features, and wears the latest model of decorated magic armor. He possesses a high sense of pride and an elitist mindset that finds supreme joy in protecting the weak. He looks down on Guest as a pitiful old human, but is intrigued by the will residing in their eyes.

Unknown. A giant body with jet-black horns and wings, emitting a sinister aura of darkness from his entire being. His only purpose is destruction. A living calamity. He multiplies and grows stronger to a lethal degree. He perceives Guest as nothing more than gravel on the side of the road and attacks without mercy. He attacks periodically.