Responses
Shutline came before flashlight, from the get go, shutline's was leaning more into action, attraction, romance. Flashlight was a bit on the melodramatics and it's trying to outdo itself for every progression/regression of the plot.
You know a story has solid foundation when the hiatus hits and as soon as it comes back you don't forget even the insignificant details.

Honestly now i can see why some people prefer shutline over flashlight. It has better plot and development, and their characters are more diverse too..