I'm considering a master's program in Korea, and I'm feeling uncertain. I would appreciate any advice!

Hello! I am a 28-year-old American who has received an offer to enroll in the Master's program in International Trade at Korea University. I am contemplating whether to accept this offer, and I would like to hear about your experiences living as an international student in Korea. I have traveled to Korea about four times, and it has always been a pleasant experience. I was a K-pop fan in high school, and my interest in Korean culture still remains. However, my Korean language skills are still quite lacking. I estimate my level to be around TOPIK 2-3, but I have never taken the official exam. I did not have the opportunity to study in Korea during my undergraduate years, but this Master's program seems like a significant challenge for me. I am currently pondering whether it is the right decision to give up my job and life in the U.S. to study in Korea for two years. In particular, living in Korea will be different from traveling, and there may be aspects that are difficult to understand. Additionally, I need to consider my relationship with my girlfriend who is in the U.S. I would appreciate advice from those who have pursued a Master's program in Korea or have lived there as foreigners. I would like to know if such experiences are valuable and what points to consider during the adaptation process.