I can't complain much about the actors, most played their roles well. The FL I hate to say isn't very good at expressing/conveying romantic feelings in this. However,the biggest issue is the story itself is poorly written. The bickering main couple have chemistry, it's just written that they are pretty much platonic, so gives more of a bickering sibling vibe on the FL's side. The ML does admirably to portray the romance, being able to convey longing, jealousy, desire, and love with a script mostly devoid of skinship and an overly childish partner. Literally has only a few episodes of hand holding, 3 kisses, and the occasional hug. Most of the side characters only pop up here and there to move the plot along, before disappearing. The FL is supposed to be cute and "innocent" , and to show this she was stupid, wore pigtails with a tshirt and shorts or a jumper most of the time, demonstrated no real desire/attraction towards men, immediately forgave everyone that harmed her, (except for the ML), literally taking every stranger as her best friend no matter what they did, pouting, and singing a silly song repeatedly like a 5 yr old. Only character that demonstrated growth was the ML. Story and characters suddenly changed out of the blue, so problems would be created and solved instantly...ie agent's storyline. She repeatedly damaged ML's career trying to break them up, not out of jealousy but because she was concerned him being in love would damage his career. She was really in love with FL's guy friend...sure that makes sense. The scheming BFF that talked FL into signing the marriage contract to get the house back, was shocked to find contract later on and realize the marriage was fake. There are more examples, but those are the worst. OST is forgettable, actual romance is lacking, will definitely not rewatch.