I found this picture on the Shinsegae Department Store website when I was reading up on the history of E-Mart and the Shinsegae corporation.
This is the first Shinsegae Department store, and the first department store at all, in Korea. It opened in 1930. Note that there is no Korean writing on the signs. It’s all in Japanese. When Japan was controlling Korea at this point, Korean people even had to adopt Japanese names and could get in trouble for speaking Korean, not Japanese, in public. I’ve read that because of this, a lot of older Korean people didn’t know how to write, read, or even speak their own language.