Story- This story revolves around an alien who will be leaving earth soon, he has made all his plans and choices until he met Cheong Song Yi. This leaves you wanting more , because will he leave her? And millions of untold questions, wanting more. It also adds a murder story which makes you want to watch more. Characters- The characters all have a personality. Cheong Song Yi being sassy, cute, over dramatic, and is an airhead(In a good way). Do min joon, a guy who is cold hearted, secretly sensible, and full of mysteries. Side characters- Se Mi has a compelling story about her love. Cheong song yi's boyfriend loves her so much even though he'll never have that chance. It shows a unique way of teaching others the hardship. The murder was really good at acting too. Cheong Song Yi's mother was good at being the gold digger. Her brother was a funny character, secretly making sure no one makes fun of Song Yi. Ost- I loved Hello Goodbye. You were my destiny was beautiful. Nothing more to say about this beautiful song. Romance- The romance feels so alive, the chemistry with Do Min Joon and Song Yi was well played and energetic. Comedy- This show brings out the fun side too. Full of laughs and comedy. Enjoyment- Full of surprises, unexpected plot twist, laugh your butt off comedy, and romance packed in a heartwarming drama. I have watched this 3 times, since I have more to go.