I read your post and think I may be able to help. I am a Canadian currently working in China and I supply items to 2 retail clothing stores back home.
If you send me pictures of what types of clothing you are looking for, I am sure I can find it for you. There are also alot of Korean clothing companies that I have dealt with before. You can sell their brands or you can buy their clothes and relabel it to be your own. That way you can promote your own brand while you sell.
Let me know what you think. You can message me back here to email me at firstname.lastname@example.org
Best of luck and talk to you soon,