Kanji, four-character idioms, and brain training problem books for adults. I am selling these because I bought them but never had a chance to use them. Please refrain from purchasing if you are concerned about their condition due to home storage. - Title: Adult Common Sense Kanji Drill - Title: Adult Common Sense Four-Character Idiom Drill - Title: Adult Lively Brain Drill - Contents: Problem book related to kanji - Contents: Problem book related to four-character idioms - Contents: Brain training puzzles - Number of pages: Problem books spanning multiple pages - Target audience: Adults Thank you for viewing.