"ENGLISH EX Grammar & Usage" Eiji Takayama / Kazuyasu Mori Price: ¥1800 Linkage Club This is an advanced grammar and usage reference book recommended for those who have completed ALL IN ONE, also published by the same publisher. It's very easy to understand, with expressions you'll encounter for the first time and explanations from a unique perspective. There are no markings in the book, but the original CD is missing. Please listen to the audio from the publisher's official website.