This is an educational book series featuring Chibi Maruko-chan, designed to make learning four-character idioms, proverbs, and common idioms fun. It was very helpful during my junior high school entrance exams. - Title: Chibi Maruko-chan's Four-Character Idiom Classroom - Title: Chibi Maruko-chan's Proverb Classroom - Title: Chibi Maruko-chan's Common Idiom Classroom Shueisha *Please note that this item is also listed on other sites, so it may be sold out. Thank you for looking.