This is mostly about three romances. Of the three I found the romance between the influencer-bodyguard/assistant to be the most interesting. But, the main romance isn't bad. The CEO of a cleaning company falls in love with a low-level employee of the company. I actually liked the fact that she is not a classic beauty, but is full of personality.
The CEO is a germophobe (as many translated shows do, they use a much less common, but slightly more accurate synonym - mysophobe). He actually is so attracted to her that he can overcome most of his symptoms around her.
The main thing I didn't like about the show is when they show flashbacks of the grandfather's treatment of the CEO when he was young. This has directly led to his germophobia. Everyone refers to the grandfather's treatment of the young CEO as "strict". I take great issue with that. The grandfather's treatment of his grandson was verbal abuse! There is no other way to characterize it.
At pushing 70, I am not some young woke snowflake. It would have been abuse 60 years ago and it is still abuse today.
Near the end of the show the grandfather suddenly becomes a nice person to all around him. A not very believable, sudden transition. The therapist starts off misusing his position, but also, more subtly, transitions into a better person.
Other than the issues with the grandfather, I found the show fine, with more modern production values than most Asian shows. And, a tiny disappointment that the bad guy never gets his comeuppance.