Personal Assistant of Female President Season 1 (2016)

they have an almost identical premise.
~contract marriage.
~childhood friend.
~female CEO.
~companys internal conflict and much more.

The both have a guy who was forced to be the bodyguard for main girl. The girl is a school girl bad guys want to kill her.The other one is she's CEO big Campany,forced to get married to a guy to be bodyguard he's from Korea...