So so so so so good for it being a web drama. My only complaint here is about how short it is and the open ending. I totally wish it was longer and we got to see Borin and Jimin together more, but for this being so short the writers and directors executed it so so well, nothing feels rushed or forced, it's the first time I've seen a web drama do that. I really would recommend this, it's one of the best web dramas made and the storyline is fresh (The app part isn't fresh but I feel like I haven't really seen anything like this minus shadow beauty even though it's not about an app). Lee Sohee did an amazing job portraying Borin in such a way where we can feel bad for her and also see her more crazy side (bathroom with Hyerim). Not one character annoyed me, they all brought what they were supposed to but not in a frustrating way like some dramas. I'd definitely recommend this, such a good watch.