I like the idea of the main character accidentally (?) turning his life into a BL fanfiction. It's silly in a good way and also feels new compared to other stories. I would have liked it more if the plot showed more ambiguity about this matter, but seeing Iwon worrying so much about it and being so weirded out by Jioh was still lots of fun to watch. Seeing both of them bicker and seeing their feelings for each other grow was quite nice! At some point I couldn't decide whether I wanted Jioh to have some peace of mind, or I wanted Iwon to panick even more. It was just a very entertaining dynamic overall.
The second couple had a less animated plot, and while it was good to see their peaceful moments, it was also a little harder to follow, all because of the untold information that was only revealed to us viewers little by little. Sunwoo and Yugyeom were adorable together despite this and managed to deliver a very sentimental and romantic performance.
Overall I wish the plot was developed a little more - maybe with more episodes, or with longer episodes. I feel like it didn't have the proper space to "breathe" fully and lead to a very satisfying ending, but I can't say I disliked what I got at all.

The only thing I really disliked about this drama was the sound mixing. I watched this on Viki, so I'm not sure if this is just a problem of that platform alone, but the sound was VERY quiet, with some parts significantly more quiet than the others in the same episode. I had to work with my volume settings a lot while watching. On top of this, the audio quality wasn't very good, both in terms of lines and in terms of ambient sounds.

I guess it would be hard not to mention the original Why R U in this review, but to be honest I'd rather not compare them. The production styles are very different from each other, the plot here went through major (unavoidable) changes, and I also still remember how there were problems during the filming of the Thai version because of the start of the pandemic.
All I can say is that I have a soft spot for the original, and that I believe that this rendition was very good at giving justice to the plot. I was also very happy to see the little tributes to the original series here and there (first and foremost, Max and Nat having a cameo in the first episode).

In conclusion, I recommend this drama to whoever is looking for something cute and fun to watch, that also isn't too demanding both in terms of engagement (the story is very easy to follow) and in terms of time (each episode is about 20 minutes long if we don't count the theme songs and the recaps, so it's very easy to binge-watch).