Fun, crazy, over-the-top, cutesy romance, crime, superhero action, girl power story. The show is a mashing together of many different types of stories.The main reason to watch it is that it is the cutest, swoony-est romance that I have seen in a long time -maybe even ever. The couple is so adorable. The 3 main leads are all really good. Ahn Min Hyeok especially is so cute when he is acting all goo goo over Bong Soon and their PDA scenes are really amusing. It's hilarious to watch. The romance is really cutesy but it grows and deepens into something really touching as the story progresses. Then there is the dark serial killer storyline that is not that different in tone than an episode of SVU. It adds some drama and danger to the main romantic storyline. There is the fun superhero action story aspect where you get to see a girl getting the best of everyone and being the main hero instead of the guys. There is the slapstick gangster storyline which was funny sometimes, but sometimes not so much. It can be a jarring mashup, but overall it is a fun show if you don't take it too seriously. If you have a low tolerance for a slightly overactive plot, slapstick humor or dark crime you might not like it. But I loved it and looked forward to each episode. It's the funnest most romantic show I've seen in awhile.