The workbook for the Japanese Language Proficiency Test : quick mastery of N1 listening / Nihongo nôryoku shiken mondaishû N1 chôkai supîdo masutâ : N1 gôkaku!
The workbook for the Japanese Language Proficiency Test : quick mastery of N1 vocabulary / Nihongo nôryoku shiken mondaishû N1 goi supîdo masutâ : N1 gôkaku!
The workbook for the Japanese Language Proficiency Test : quick mastery of N1 grammer / Nihongo nôryoku shiken mondaishû N1 bunpô supîdo masutâ : N1 gôkaku!
The workbook for the Japanese Language Proficiency Test : quick mastery of N1 reading / Nihongo nôryoku shiken mondaishû N1 dokkai supîdo masutâ : N1 gôkaku!
Introduction to Kanji = Kanji masutâ N5 ; nihongo nôryoku shiken N5 reberu
Kanji for beginners = Kanji masutâ N4 ; nihongo nôryoku shiken N4 reberu
Nihongo nôryoku shiken N3 yosô mondai shû : kaitei ban