I'm currently binge watching it on IQIYI since, YAY, all 8 episodes are available!! I'm just over halfway into episode 4 and I'm really enjoying it! Nine and Mill have great chemistry, of course, and they are both playing the rolls perfectly!! I love their body language and micro expressions. I am finding them to be very believable. Rie also is doing a good job in the so far as I can see, limited role as a jealous trainee. KB is doing well as what I'm guessing is either an ex boyfriend or ex group member of Nine's. His character seems sketchy to me and I'm curious to see what exactly happened between them. Yoojung has only appeared very briefly but he did well which brings us to Junji lol. I have to commend him for his efforts because he seems to be playing a character very different from who he seems to be 8n real life so the performance seems a bit awkward and unbelievable but he is so darned cute and he really seemed to throw himself into the role, small though it may be. I have only been into OnlyOneOf for about a year now and I don't follow them super super closely but based on the music videos that feel like short story BLs, I'm not at all surprised by how well Rie can act. I think Junji is good too, better than he appears in this series but I think that's just because of the character he's takes to play here. I think Nine and Mill are absolutely fantastic so far and had I not known who they are, I would have pegged them as actors not members of a Kpop group. Wow, I went more into this than I intended! Anywho, I love OnlyOneOf and I am enjoying this series immensely so far!