The present study examines Japanese language learners' perception of corrective feedback (CF) in pair work in relation to their noticing and understanding of their partners' CF and the factors that influence it. This study focuses on three learners, who worked together in pair work. The data collection methods consist of classroom observation, audio-recording of the learners' speech in class, and stimulated recall interviews following the classroom recording. The data analysis revealed that the learners sometimes did not understand their partners' CF, and their dissatisfaction with their interactions affected their understanding of CF. The study suggests the importance of learners' understanding CF and their satisfaction with their roles in their interactions during pair work. (Contains 5 notes and 1 table.)