Both dramas have a female lead who knows martial arts and works as a stunt double. Both male leads remind me of each other in looks, personality, being wealthy, successful and who fall in love first.

Both are "Friends with Benefits" dramas about relationships which start out as meaningless interactions of simply physical intimacy but eventually turn into true love.

Contract marriages
Rich CEO male leads
Spunky female leads
Same devil and angel animated characters
Both are fake relationships which become real
Excellent skinship with real kisses
Feel good romantic comedies