This series of books is designed to help you prepare for the JLPT (Japanese Language Proficiency Test) in a structured and manageable way. Each book is focused on a different level of the test (N5 to N1) and covers kanji, vocabulary, and grammar in a comprehensive and easy-to-follow format. The series is designed to be studied over a specific period of time, with 20 days for N4, 28 days for N3, and 45 days for N1. Each book includes practice tests, answer keys, and helpful explanations and translations to support your learning. Perfect for those who want to fit their JLPT study into their busy lifestyle, this series is a great resource for anyone looking to improve their Japanese language skills and pass the JLPT.