Quartet 1

An excellent book. Very well organized.

Reading and listening parts cover very interesting and modern topics. This made my study hours very fun. I was excited for each lesson because I could learn not only Japanese, but also a lot about Japan and its culture.

Narrators have also done a great job.

There's a very useful part at the end of the book called "brush up", where you can find grammar points that seem similar but have slightly different applications.