Most BL dramas I've watched, I rate them a 10/10. This one is no different. First of all, I feel like they've really improved with the kiss scenes; past Korean BLs (for example Color Rush) have only one kiss scene and they barely touch lips. But this one as well as To My Star and You Make Me Dance have really good kiss scenes.
Another thing is the very fitting title. I'm not sure if they meant to do it, but I feel like the title is a play on words (in a way). My brother pointed out that 'semantic' kind of sounds like 'romantic' which is fitting since this is a love story. But the title also fits the theme and storyline of the show.
I binge-watched this in less than a day, it was really addicting. I love when the two main leads have a height difference, for some reason I find it adorable when the smaller guy stuffs his face in his bf's chest while they're hugging.
Anyways, I highly recommend watching this.