The male lead also got amnesia after getting plastic surgery and changed his identity, both of them took a while to remember their original self
Kim Sung Ho and Son Joong Ki characters are a bit similar

Both are mystery dramas where the FLs lost their memory and stay/help out at the antagonist's household

In both dramas the main character was not meant to die, the grim reaper also made a mistake of taking his soul so he puts him in another body

- female lead also has that weird feeling knowing she is going to change into another person and runs away to hide her secret