The story is nothing new; I guess anyone who have watched dramas for while came across something similar before, so it should be a challenge to make it interesting.
Overall it is filled with inconsistencies, probably makes a bit of sense coming from an alien but rather difficult to understand the male lead having multiple reactions - even though having some mental condition. It just didn’t leave me any impression on the events leading to them getting together (and twice!). One particular event that did leave an impression is the female lead getting subdued and restrained by a mad scientist. No explanation why he was able to subdue a powerful alien with his bare hands (maybe he carried her crystallized blood?), really forced I must say. What followed after is really uncalled for, something I would call a torture scene? And thereafter an escape attempt foiled by a violent act on a fair lady. She maybe acting as an alien but it does not make it any easier to watch.

What kept me a bit interested is the female lead, she is so cute and lively especially for the first half. Didn’t think too much of the male lead in the beginning but he grew on me. Among the supporting cast, the restaurant owner and the male lead assistant were the rare sparks in the show.

The OST in the beginning and end sounds nice and compatible to the drama but they were just played in the beginning and the end. There was also a track performed by a male singer that was nice at the very end. What a waste. Cannot recall anything else except for some old sounding tune quite frequently used in many scenes.

I am fine with flawed dramas, but this is one that I completed just for the sake of completing it. I am quite sure it wouldn’t leave any more impression even if I rewatch it.