This study investigates how entrepreneurial characteristics and cultural diffusion affect the competency and competitiveness of international interns in the Ginou Jisshu program, which connects Indonesia and Japan. The research used a quantitative method with data collected from 400 interns across 38 Indonesian provinces. The findings show that individual characteristics and Japanese work culture positively influence competency and competitiveness, with self-efficacy acting as a moderating factor. Self-efficacy strengthens the impact of individual characteristics and Japanese work culture on competency and individual competitiveness, but weakens the effect of individual characteristics and competency on individual competitiveness. The study introduces a new paradigm where any positive effect, regardless of statistical significance, is considered beneficial. It suggests that resolving minor issues can amplify positive effects and mitigate negative ones. The study also highlights the importance of cultural diffusion in enhancing interns' competence and competitiveness. The findings support the idea that cultural exchange and adaptation can lead to improved performance and better outcomes in the workplace. The study underscores the role of self-efficacy in shaping individuals' ability to adapt and succeed in new cultural environments. Overall, the study provides insights into how individual characteristics, work culture, and self-efficacy influence the competency and competitiveness of international interns.This study investigates how entrepreneurial characteristics and cultural diffusion affect the competency and competitiveness of international interns in the Ginou Jisshu program, which connects Indonesia and Japan. The research used a quantitative method with data collected from 400 interns across 38 Indonesian provinces. The findings show that individual characteristics and Japanese work culture positively influence competency and competitiveness, with self-efficacy acting as a moderating factor. Self-efficacy strengthens the impact of individual characteristics and Japanese work culture on competency and individual competitiveness, but weakens the effect of individual characteristics and competency on individual competitiveness. The study introduces a new paradigm where any positive effect, regardless of statistical significance, is considered beneficial. It suggests that resolving minor issues can amplify positive effects and mitigate negative ones. The study also highlights the importance of cultural diffusion in enhancing interns' competence and competitiveness. The findings support the idea that cultural exchange and adaptation can lead to improved performance and better outcomes in the workplace. The study underscores the role of self-efficacy in shaping individuals' ability to adapt and succeed in new cultural environments. Overall, the study provides insights into how individual characteristics, work culture, and self-efficacy influence the competency and competitiveness of international interns.