As much as both the drama titles appear to be poles apart, the beginning of both the romances are similar in nature. The female leads in both the drama have a tendency to escape from their city lives when the going gets tough and move away to remote areas where they find their future love interests.
Bonus: both the male leads know how to surf and look fine while at it!

1. Both the female leads have humble beginnings who are trying to sustain themselves on their own as well as are providing for their families simultaneously.
2. The leads in both the drama have childhood connections.
3. Workplace romance where the male leads are in a professionally superior position and are still trying to support the female leads both financially and emotionally as much as they can.
4. The sub plots of other coworkers comes off as equally impactful and touching as the main storyline.

Both are youth based dramas where the main characters are trying to make it big in the world by starting their own businesses.
Kim Seon Ho comes off as a common link between both these dramas by acting as a capital investment mastermind.
Personal /professional relationships getting blurred is a also a common ground.

Both the shows are essentially legal dramas with romance as their core theme.
Also one of the lead characters in each of the show goes on to learn the tropes of working at a legal firm after starting as a clueless rookie in the course of the 16 episodes.

Both the shows have Lee Je Hoon as the male lead being his usual clueless yet loveable self, meddling with different time zones while trying to solve the murder(s) of a close acquaintance.