I think one of the reviewer "angelvsdevil" actually sums up pretty much everything. This is somewhat comedic dumb drama that you cant or shouldnt take too seriously (although the story picks up better mid the drama).

I have to say I myself wasnt AT ALL A FAN of this genre, i drop this weeks back on ep2 but because I have plenty time decided to pick this back via netflix recommendation. Once you get used to the exaggeration and comedy, somehow I get sucked to binge and loving it.

The whole impression just reminds me of multiple drama parodies. WL gives me a little like WWX of untamed parody (even the look at times), the budding of WL and HY reminds me of untamed parody, the wolves story which is F4 meteor garden parody. also O2O ost cracks me up hard. Damn I love that song! The games story reminds me of liar game parody. The way WL insult the story line cracks me up so bad and the ways they use some line from other drama/idol. It is bizarre how I actually ended up liking this but somehow those weak points turns up to be the only things pushing me to watch more and more. i have to be honest I skip about 20% of the drama when the jokes get a bit too draggy or overboard.

The only 2 major complaints I have
1. I really like WL ego narcissistic smartass character, but takes me awhile to actually like WW. When i started to get used to the character, i actually really likes her but to be honest the love line between WW WL is just too forced. I absolutely hated this love line. First I feel that WL looks wayyy too young for her. Second, I really like their master discipline relationship which feels like WW is hard core mama bear, but the love line just totally ruin that perfect relationship. I dont know how everyone eventually liking it at all. It sort of giving me the disgust like a son loving his own mother sort of feeling. Yucks. Third, their personalities are too similar to become a couple, I dont feel one ounce compatibility at all. I was actually hoping HY brother ended up to be good and have a love line with WW instead, I find them really compatible and how they handle the jokes even age wise also more compatible. I am just terribly speechless and utterly disappointed with the ending. I thought this drama can surprise me with a better pairing.

2. Letting the first complain go because I enjoy the budding relationship between WL HY but why is the ending so unclear for HY story???? So who killed his family? Is it himself? How did he master the devil thing? Is he the one who killed his own parents from the start? The ending isnt legit at all as it feels like simply just flipping away rather than answering all the questions.

So to sum it up. I am recommending this to everyone, it was a light, packed with punches, crazy dumb drama that gonna crack you up. My suggestion is dont take it too seriously and just enjoy it. But although I like it, I wont rewatch it. Its sort of lame to hear the same jokes again and again. I enjoy the acting and loving most of the cast, even HY brother, love the music used, love the buddies relationship, love HY LL love line, love mentoring relationship, love the dumbass joke, love the parodies. Absolutely HATE the main love line, dislike the open ending. And funniest thing is I would hated to see sequel (if there is any) as I wont want to see the main love line, but at the same time I am damn curious what happen to HY).

This drama just sort of doesnt follow the law of drama, but still good. Hope this helps.