actually I didn't remember this drama, I watched it probably in 2017 in my early beginning of watching asian's dramas, and I remember finding it entertaining. but I had no comparison, or very few ones. then I stumbled again on it, watched it, and remembered the drama on episode 5 or 6, then watched it again because I didn't remember much and needed a second view on it, and felt disappointed.

that's entertaining if you have nothing else to watch and have not much time to spend on dramas, because the episodes are short and the story is very shallow. it's funny though, if you don't overthink it, because the guy is an obvious narcissist. on that point, I learned a lot about narcissists last year, and this drama felt to me like a "how do narcissists choose their victims and why do they get interested in normal and loving persons in the first place?". like a class case.

how do they choose their victims? they just keep the one who is unable to protect himself/herself from them. that's all.
why are they interested in normal people? because they lost their ability to feel their emotions, and they are longing from them. that's why they love empathetic and loving people because they can pray on their emotions through them. and if they feel unable to pray on these emotions, they will destroy the victim out of frustration. this drama is very awful if you overthink it. but you can also do both, enjoy and overthink it.

when to watch? when you are bored and don't want to make any effort.
audience: family friendly.