I liked the plot, I watched it aaaaand...well, it was nice.
I don't think it deserves more than an 8/10, because it's your typical and average romantic drama, and since it's kind of short (when it comes to the number of episodes and the duration of these), there's no exploration of the characters in depth.
I wanted to know more about the circumstances that brought them together, what made Kang Gook become Tae Joo's bodyguard, etc... in fact, they only state facts, and you have to accept them as they are. No backstory. Just focus on their relationship.
As for their relationship, it's full of that lovely angst we nurtured ourselves through fanfics, and made us love it so much. But sometimes, you end up not understanding their feelings (or was it only me haha)

anyway, it was a nice web series, maybe I'm asking too much (maybe cause I'm used to more "complete" stories ? or maybe cause I grew tired of the romance genre ?). I'd would honestly recommend it, especially for first time BL watchers, but I wouldn't expect a lot from it