Chibi Maruko-chan's Perfect Score Series, 6-book set. This is a great set of books (with four-panel manga) to introduce children to the study of Japanese language. * Proverb Classroom * Idiom Classroom * Expression-Building Vocabulary Classroom * Kanji Usage Classroom * Honorific Language Classroom * Etymology Classroom All books were purchased used and have been used. There is a feeling of use, yellowing, rubbing, creasing, folding, scratches, stains, and other damage, but there is no problem with reading them. Please understand that these are used books before purchasing.