This is a completed series with 80 chapters (no afterwords).
Adorable FL (Jieun) with a cute premise (bumbling and a lot of mistakes at first, but wears her heart on her sleeve) that unravels at a decent pace with the cold ML (Mr. Ma), with both leads growing beyond their initial impressions of one another (and everyone else's perception of them.) Solid story of opposites that bond over time.
There is quite a lot of drama picks up by the last 10 chapters, mostly revolving around the office politics where the FL's nemesis really causes a lot of tension within the office space and eventual gossip/rumor mills causing more mishaps. The comedy takes a backseat from this point, but you can't help but cheer on both leads to see things through. Now, the ending doesn't state if the leads officially make their relationship fully known in public, but it is heartwarming to see it develop over time and strengthen.