This book is designed to help learners acquire Japanese language proficiency at the B1 level according to CEFR and the Japanese Language Education Reference Framework through activities. It focuses on learning Japanese by engaging in discussions and exchanging ideas with others, thus acquiring the language needed to function in a professional setting. Instead of studying grammar and vocabulary first and then practicing using Japanese, learners will be assigned tasks based on real-world social activities, and they will learn how to use language through the process of completing these tasks. **Skills Acquired with This Book: ** Japanese proficiency for social activities: reading, listening, interacting (speaking), presenting (speaking), and writing. Basic professional skills and technical skills for working adults. The ability to live in a multilingual and multicultural society. **Proficiency Level: ** B1 level according to CEFR and the Japanese Language Education Reference Framework. **Class Hours: ** Approximately 200 hours.