Both stories are about two male leads who are CEOs and how they become CEOs with the help of two female leads who are very similar, style-wise. Both male leads have health problems and they both go through hardships because of their families and companies. Both have gone through some bad things as kids and in both dramas the two leads are related since childhood. They hate each other at first but change witht he help of one another. Both dramas are funny and in both dramas there are antagonists who try to create problems inside the company. Overall, the feeling is kind of the same!
It's really early but these two have the same vibes. The work, company and comedy. The leads have similar personality too. The bad at first good at the end main lead. The good and loyal female lead. Don't forget the jerk second lead . If you like any of these two dramas , you will really enjoy the other one too.
At the beginning of the series both the male leads are cold blooded ruthless business men. Due to a life changing event the personalities of both male leads change for the better drastically from before. If the changed personality is caused by a heart transplant in Falling for Innocence , it is an accident which changes the male lead's personality in the Sawan Saang.