i honestly wasnt expecting much from the plot or synopsis alone but the execution was great. although they could do with a cleaner script as it can be a bit confusing during some parts.
this kind of story isnt something new, its been thought and done but few are as good as thins. its the character that bring the different. i love how both leads are kind of 'nutjob', they dont hesitate taking things to the extreme. i specially like ji soo hyun, shes the kind of cool female character that talk less and do more, the kind that show her feeling and emotion through her action.