They both are focus on political drama centered around the strong female lead on a mission, with really strong chemistry and some dash of comedy. The overall vibe of both drama is the same although the plot and character are a bit different.

They both have similar power couple with their unique quirkiness which make them very loveable. Although, there are kinda a SML and even a 3rd one, unlike in A journey to love where there are multiple potential couples one could ship for. (none of mine set sail T_T or reach the destination).

I am surprised no one is mentioning this gem.

Similar mains' characters
the bro/sismance between the male group and female group
similar vibe so I am sure you will like the Boku unmei no hito desu if you like Love Revolution

difference is that boku unmei no hito romance is more of office romance