Thank you for viewing. I am selling a set of two books: "Z-Kai Elementary School Exciting Work 2021 5th Grade Summer Vacation Review Edition (880 yen)" and "Gakken Elementary School 5th Grade Reading Comprehension Daily Drill (638 yen)." Both books are new and unused. There are no markings, and the inside is in a clean condition, but the outer covers have slight dirt and creasing due to home storage. Please understand this before purchasing. How about these for solidifying your child's basic academic skills?