This is a used item, but there are no markings. "Survival of the Human Body 1 (Survival Operation)" Hyeon-dong Han / Gomdori co. Price: ¥1200 Purchased and read several years ago, then stored in a dark place. As shown in the images, there are small folds and signs of use. I have checked it, but since it was read by a child, there may be scratches and stains. Please be aware of this beforehand. Please purchase only if you understand that this is a used item and has been stored at home.