This paper illuminates four Japanese university students’ experiences of Hungarian language learning, during study abroad, in the form of a multiple case study. It seeks to address the participants’ self-perceived Hungarian language competence and their actual proficiency as well as its contribution to their professional careers. Data were collected in the form of in-depth and follow-up interviews about students’ Hungarian language learning. Further, participants answered a questionnaire about their self-perceived Hungarian language competence, followed by a Hungarian language test to measure their actual language proficiency. In addition, Facebook posts about language learning were used as authentic study abroad materials. Findings suggest that students’ self-perceived proficiency was mainly consistent with their actual proficiency and learning Hungarian contributed to their professional lives in terms of becoming more intercultural, global individuals.