They both know though... It's not been explicitly said but Daejun knows it's Hajin
Daejun knows he is hajin but hajin doesn't know that daejun knows. So it will be so cool if he admits he is hajin and daejun is just like I knew I always knew. And then hajin will know daejun loved him for him kinda like that you get what I mean I'm not good with words sorry
Hajin kinda does know that Daejun knows
Nothing was said obviously... But in chapter 104 or something where they kissed it's apparent that they kinda know
Kind of want 'sihyeon' to admit he's actually hajin to daejun