In the fourth photo, the separate answer key has a tear repaired with tape. The answer key shows signs of use. There are no markings in either the main book or the answer key. Thank you for your understanding. "Kanji Kentei Level 4 Topical Problem Collection" The Japan Kanji Aptitude Testing Foundation Price: ¥900 #The Japan Kanji Aptitude Testing Foundation #The_Japan_Kanji_Aptitude_Testing_Foundation #book #language/Japanese Japanese language, cram school, elementary school, junior high school, compound words, antonyms, synonyms, four-character idioms, furigana, homophones, homographs, radicals