This is a case study of tandem learning using a metaverse platform in a Vietnamese-Korean language course. It aimed to explore more efficient foreign language teaching methods beyond traditional approaches. To achieve this, the study provides an in-depth look at the course structure that incorporated tandem learning, the interactions between learners on the metaverse platform, and survey results reflecting their learning experiences and perceptions of this particular approach. This study is significant in that it provided a new learning environment using the metaverse, enabling more active participation from learners. It also integrated the tandem learning method, which allows learners to actively participate in the mutual language acquisition process as both target language learners and as instructors or experts of the partner’s target language. Furthermore, the study is meaningful for its specific attempt to design tandem learning classes using the metaverse, particularly for Vietnamese-Korean classes.