In previous studies, researchers have argued that teaching in the target language (L2) is the most effective approach (Krashen & Terrell, 1983, p. 9). Recent studies show, however, that using students’ language (L1) can offer a variety of benefits to language learners (LLs) (Leeming, 2013; Bartlett, 2017; Inada & Inada, 2021). In the following presentation, I will present the results of the first stage of a long-term data collection, which explored university LL perspectives regarding English-only and Japanese-only lessons. In this study, students enrolled in compulsory English lessons at a Japanese university completed a survey at 3 different times throughout the first semester. Results from initial data collection show that students prefer neither L1- nor L2-only lessons, but a mixed usage of both. The presentation will conclude with advice for language teachers. Specifically, how to find balance in your language use, and how your language use can affect learner development.