16-book set of the Tokkyu series, including "Shin TOEIC TEST Bunpou Tokkyu 2 (Kyusho Attack Hen)" Changed to a 16-book set. #Tetsuya Hanada #Tetsuya_Hanada #book #language/English, grammar tokkyu, reading comprehension tokkyu, vocabulary tokkyu, difficulty measures, listening tokkyu, salaryman tokkyu, mastering parts