If you truly cannot obtain the official book, these are excellent (and legal) substitutes that offer similar question styles:
The Official JLPT Website provides sample questions and older versions of the workbook for free download. jlpt koushiki mondaishuu n4 pdf
This is often the most challenging section for students. If you truly cannot obtain the official book,
The (Official Practice Workbook) serves as the "gold standard" for Japanese learners transitioning from basic survival phrases to functional communication. Unlike third-party guides that focus on drills, this collection is published by the Japan Foundation and Japan Educational Exchanges and Services (JEES) , offering the most accurate reflection of the actual exam's difficulty and structure. The Bridge to Fluency Unlike third-party guides that focus on drills, this
Sunday morning, Kenji set his alarm for 9:00 AM. He cleared his desk, put away his phone, and poured a glass of water. He was simulating the exam environment.