This is a new calculation drill featuring Rilakkuma characters, designed to improve calculation skills in a fun way. - Series Name: New Repeated Calculation Drill - Volumes: 1, 2, 3 - Publisher: Aoei Publishing - Characters: Rilakkuma - Content: Calculation problems and angle problems - Target Age: Elementary school students Thank you for viewing. As shown in the photos, I have checked several pages for writing. There is a sticker on the back. I will cut out the name before sending it. If you don't mind, please consider purchasing.