This is a set of four books. Details are omitted, and I will describe the condition of the books. ◉ The Real Environmental Problem, 189 pages, 2008 Cover present, no obi (paper band). In fair condition (apologies for the vagueness). ◉ Yoro's Teachings, 191 pages, 2007 Both obi and cover are present, but the obi is worn. There is age-related deterioration. ◉ Serious Fools, 277 pages, 2006 Both cover and obi are present. From 2006, but has the smell of a used paperback/old book (lol). ◉ Can You Understand Squid by Looking at Dried Squid?!, 185 pages, 2003 Both cover and obi are present. The book itself is clean. All books have been well-read, so there are many sticky notes, folds, and underlines. As a bonus, I will include: ◉ From Todai to Prison: "Takafumi Horie & Mototaka Igawa" (almost new), making a total of 5 books. Please note: All books, including this item, are considered to be in a condition that "does not hinder reading." Please refrain from purchasing if you are looking for books for your collection or bookshelf. There may be sticky notes, underlining, folds, etc. Occasionally, people buy used books expecting them to be like new, which is not possible (lol). These are not rare, out-of-print, or first-edition premium books. Thank you for your understanding and acceptance. Please judge the size of the books from the images, or ask questions in the comments. The year displayed is the year of the first edition and does not necessarily mean that this book is a first edition.