Is there anyone who knows information about YouTuber Heejae Ssangsoo Hospital? I saw the video and it looks like he is very good at his doubles, but I
tried to find the information but I can't even see it because he wasn't promoted.. He is really good at his duals and I want to do it there, but I don't know the information. If anyone knows, please let me know as if it's saving someone's life. I wonder if it won’t work..