@Joongdok if you are really curious about
Spoiler!
Because Kim Suho has a major secret of his own. Like Kim Hajin, he can't tell anyone abour ir
Comment by Random commenter on Joongdok
2 Replies
@Random commenter his secret is his hiding his true personality and he returned, dont know if regressing or returned from another world. Ofcourse kim hajin know it all
@Random commenter 