This is a novelty stationery set from Hokto, famous for its slogan "Delicious mushrooms are Hokto." It includes a desk mat, pencils, an eraser, and a ruler. The desk mat has a slight curve due to storage, but it is not broken and should return to its original shape if straightened. A small amount of dust has entered through a small hole in the desk mat's nylon. Thank you for your understanding.