Is it possible to purchase steroids or peptides in Korea?

I am planning to stay in Korea for about 5 months and am currently undergoing TRT. I have already gone through several cycles in my home country, but I am curious about how common it is to find these products in Korea. I am especially interested in knowing if there are ways to obtain these products in areas like Gangnam or Itaewon. Can anyone share their related experiences or information with me?