"Z-Kai Grade Up Problem Collection for Elementary School 1st and 2nd Grade: Science Ahead" Z-Kai Instruction Department Price: ¥1000 + tax #Z-KaiInstructionDepartment #Book #Society/Education/Learning Pencil markings on the first 13 pages (out of 85 total pages). These will all be erased with an eraser. Some marks may remain. The remaining pages are blank. The content is very good, so I think it will be helpful. Please understand that this is a used item stored at home and inspected by an amateur. Thank you☆