Nihongo So-Matome is a Japanese language book series published by ASK, which also publishes the Japanese Graded Readers series.
The series is divided by levels of the Japanese Language Proficiency Test and by subject : Grammar, Vocabulary, Kanji, Reading Comprehension and Listening Comprehension.
Nihongo So Matome is recommended for self-studying. Each book is designed to be studied in 6 weeks, featuring 6 lessons per week though you should study at your own pace and make sure to be ready for the JLPT Test you are aiming at.

![Nihongo So-matome JLPT N1: Vocabulary [revised edition]](http://omgjapan.com/cdn/shop/files/n1-vocabulary_885b1f01-3c0d-431c-829a-a54ba9c3b0c7_800x.png?v=1684919235)

![Nihongo So-matome JLPT N1: Kanji [revised edition]](http://omgjapan.com/cdn/shop/files/n1-kanji_e3f7df68-4e18-4e8a-8621-ad4131421ed0_800x.png?v=1684919647)
![Nihongo So-matome JLPT N1: Grammar [revised edition]](http://omgjapan.com/cdn/shop/products/nihongo-so-matome-bunpo-n1_800x.png?v=1661742306)