Under the trend of globalization, people interact with each other more frequently. Therefore, in order to communicate with foreigners smoothly, it is necessary to have foreign language skills and cross-cultural communication skills. Many of those who passed the N1 said they found it difficult to communicate with each other due to lack of understanding. In other words, they had trouble understanding Japanese. This is because most of the Japanese education in school focuses on “what to teach students and how to teach students”, The Japanese education does not play the role of personality cultivation. Therefore, in recent years, some scholars began to propose new Japanese teaching style of personality development (hosogawa,2010;takahashi,2012; tousaku,2018). In this study, we first explain the issue of personality development in language education, design a curriculum with the goal of personality development, and analyze the changes produced by students. The results of the study revealed that students had a new understanding of time management and the similarities and differences in the perception of time in Taiwan and Japan. The students also learn self-identity and self-understanding of other cultures through the course activities. These are important for the development of students’ personality.