Some are from 1988 (oldest) and others from 2013 (newest). The genres are varied. The older ones may have some stains on the cover and other signs of wear, but they are still perfectly readable. Please inquire about individual sales. 【Diverse Themes】 "Takusan no Fushigi" is a children's book series that covers a wide range of themes, including nature, science, and culture. It is characterized by content that stimulates children's curiosity and promotes learning. Thank you for looking.