This is a set of problem books and study guides specifically for junior high school entrance exams, covering math, Japanese, science, and social studies. They include materials from Yotsuya Otsuka, past exam tests for my daughter, and more. The condition of the books varies, from well-used to nearly new. Some have writing in them, while others do not. Please understand that there may be writing and signs of use. If you would like me to check a specific book, please leave a comment, and I will add more details. I'd like to send these out quickly, so I appreciate your understanding. Shipping will be cash on delivery (Takkyubin) from Saitama. Please confirm the shipping costs. Shipping will be after January 17th. Thank you for looking.