Some universities in Korea can issue admission notices similar to conditional admission. For example, the postgraduate course of Yonsei University allows students to study at Yonsei University for one year and then enter the major according to the students' conditions. I got a D2 visa.
Similarly, Hanyang University adopts a similar form of conditional admission for undergraduates and postgraduates. Students without basic knowledge of Korean can also apply for D2 visa directly. Then, after entering the school, they will take language classes for a certain period of time according to the students' Korean level, and then enter professional courses.
Generally speaking, as long as you perform well during this study period, you will definitely enter this major. Specifically, it is necessary to see clearly the explanation of the admission notice issued by the school, and whether it really has the conditions to admit this nature.