About OSUKEN

About OSUKEN

OSUKEN is a consulting and training company that provides multilingual study materials for foreign workers in Japan.

We know that studying for Japanese certifications in a foreign language can be tough. That’s why we’ve created learning materials in English—so you can fully understand the content and walk into your exam with confidence.

Exams Covered by Our Study Materials:

• Hazardous Materials Handler Class B Type 4（危険物取扱者乙種第4類）
• QC3
• Nissho Bookkeeping Certification Level 3（日商簿記検定3級）
• IT Passport Examination（ITパスポート試験）

Why OSUKEN?

• Study materials developed by experts with years of hands-on corporate training experience in Japan
• Clear, easy-to-follow content powered by AI—designed for learners at any Japanese level
• We’re here to help you build your skills and grow your career in Japan

Ready to get certified? Let’s do this together!