I'd like to address a few of the reviews before diving into my own.

Diew's hair colour suits him a lot, I have no idea why people are calling him a clown, it's a drama, why in the world are y'all focusing on the turtle's cage, pretty sure he has a nice big home after the shoot (Diew is a college student, he can't get a life sized tank in his accomodation).
The drama is very similar to the soft but absolutely adorable drama's I've seen lately, "takara no vidro" and "hidamari ga kikoeru" however if these drama's aren't your cup of tea you wouldn't like 'monster next door'.

Both the MC's are soft and understand one another, there's no aggression, and they respect each other's boundaries. It's a lot like real life. Even with wan and beer it's not easy to go from a friendship to romance, ofcourse it's going to be a little awkward.

There is some drama with diew's ex, they have no issues at all, so you can't really blame them for going for the age old ex drama. However, they don't take too long to resolve it. Nonetheless it's been great.

I've constantly been smiling and laughing throughout.