Although the plot is totally different..but in both the stories romance between the main leads start with the need of being with each other rather than love. And also, the FL has a crush on the SML at the beginning..;p

In both the stories:
- angel/gumiho falls in love with a human
- angel/gumiho helps their beloved in their work of field, which they are very passionate about
- a non-human that desperately wants to be a human

Though the stories were totally different but in both of them - there are multiple men who has a love interest for the female lead apart from the male lead..and the return of the female lead's crush/ex-boyfriend, who's also after her now.