I don't what he is about to say

But I appreciate that Yoon Seul stayed polite and didn't feel anything against Kang Joon. I don't know about him rejecting him coldy (like the summary described it), I don't really know how you can reject someone warmly or kindly... Sounds more to me like rejecting someone by also giving them hope that it could eventually be accepted and Yoon Seul didn't appear to be eager to date anyone to begin with. And rejecting someone by also implying that it might work out even though it won't seems way crueler to me. Putting the answer straightforwardly on the table is ultimately the best thing he could have done, in my opinion.

I appreciate that he rejected him like anyone else he did with.
I've seen some plots where it's the same situation but that the rejecter even cursed at or was really disgusted by the confessor. So that he didn't have any bias makes me like him a lot, too. I hope that he doesn't end up saying anything to Kang Joon at this point now though.