1) The reason I watched this : The main reason I watched this drama is because of the unique story mix , and the ALIEN concept its very rare to find this type of dramas , thats the main reason for me , As for the cast they were not catchy for me , I have just known Kim Soo Hyun for his amazing role in The Moon that Embraces the Sun in-which he did an amazing job and showed some promising talents , also Yoo InNa who doesn't know her , MAIN role in a very similar drama named Queen In Hyun's Man , best romantic role she ever played, but I liked more her act in this drama as a second lead, it more suited her rather than being the main actor, overall This drama is highly recommended , plz don't miss it . Unique outstanding story , keeps u on edge not all the time but enough to keep u watching . 2) Storyline/Plot: *The cinematography is great , but the story is even more great which is one of the strong points of this drama *Main Genres: --->Supernatural/Fantasy : The alien concept is just perfect for the story , its one of the main reasons which kept the story going , adding this unique and original romantic and comedic scenes , it added a lot to the story , without it , it would just be another regular K-drama series --->Comedy: Just few moments which make u really laugh , other are just average --->Romance: very cute , the chemistry between the 2 main leads is present but not that strong --->melodrama : very poor , despite the fact its rated as one !!!! Story: 9/10. 3) Acting/Cast: *Main Leads : Kim Soo Hyun and Jun Ji Hyun both of them done a really great job , but this is not what amazed me , what amazed me more was how the whole cast members leads to the success of this drama , as for me Its my first time to watch an actor called Jun Ji Hyun after a very long period last thing I remember was her famous role in my sassy girl .. she was good but not that perfect for me. but overall both of them were perfect for the drama. *Supporting actors : I liked most of them , everyone was averagely perfect .. *Other characters were Perfect , the cast really did a great job , everyone was suitable for his/her role *Relationships: --->Romance: one word " Alien Love" , the Alien part added a lot to many scenes especially the second kiss scene make it a unique magical one of a kind scene , chemistry 7.5/10 --->Love Triangle: present but u can't feel it , Actually there was more than one but with no progress or tension , just a simple one surving the main story Cast: 7/10. Acting: 7.5/10. 4) The ending: Good one The ending: 8/10. *Is the drama memorable: YES My impression: 8/10. 6) Overall: Overall: 8/10