We publish e-books on Amazon Kindle, focusing primarily on study materials for the SAKE DIPLOMA exam. In addition to providing Japanese content for domestic readers, we share multilingual content localized with high-precision AI to deliver Japanese culture to the world.
SAKE DIPLOMA Study Materials
- J.S.A. SAKE DIPLOMA Exam Prep Course (2026 Edition)
- J.S.A. SAKE DIPLOMA Practice Questions (2025 Edition)
- SAKE QUIZ 250: J.S.A. SAKE DIPLOMA Exam Prep (2025 Edition)
- Japanese SAKE QUIZ 250(English Edition)
General Interest Books
- Why is Akita Top in Education and Gunma Led by Strong Women?
- Turning 50 and Single: How to Shape Your Next Chapter
- iving Alone for the First Time: 50 Hidden Pitfalls You Need to Know
- Solo Travel from Age 50: Embracing Freedom on the Open Road
- When a Ramen Shop Hires an AI