This show had me seething at times, basically throughout the first two episodes i was so angry because of the stuff that happened. It could have been a 9 or 9.5 if i didnt have issues with the way the show ended, this might be a personal thing rather than actual issue, though i do think it was out of place and unnecessary, but lets wait with complaints about that till the end.

Overall i think the shows plot and storytelling was great with a few minor issues here and there, it focuses mostly on company politics of the main leads and tangentially on lives of some of the office workers and executives. All of it felt pretty well written, i liked the struggle of the new copywriter employee of liking her demanding job while trying to have family life and convince her kid to let her work. All the characters were pretty well written, the heiress was pretty fun and felt quite refreshing compared to some other shows. She was portrayed as a bit arogant cause of her money, acting a bit naive and childish at times but still pretty smart and driven when she actually wanted something. Son Na Eun was adorable in the role, she was the reason i started the show too, so it was nice that her character turned out as someone i can enjoy watching.
Lee Bo Young was great as the main lead Go Ah in. Her character was portrayed as quite strong and driven, considered a b*tch thats greedy and after money, by many of her colleagues. The portrayal of her struggles and unstable mind felt pretty realistic and her slowly getting close with her colleagues felt nice.
Portrayal of the other characters and the hierarchy of seniors and their juniors captured quite well. at least from i know, the korean work culture and hierarchy/respect structure.

Anyways like i said it could have been a 9 or higher, but i didnt really like the ending. More concrete spoilers ahead
First the main leads rival in the company got fired, which felt quite satisfying for a bit, but then they had a moment with other employees sending him off with respect after all the backstabbing he has done, which i didnt enjoy, but eh i can get over that. Then the main lead was appointed CEO and they had a bit of a cheesy first day welcome for her with like a freeze frame style ending with everyone smiling and being a bit smug. Ok, not my cup of tea, but it was nice enough. Should have ended there But no straight after that there was a year later epilogue of the main lead having her own agency and everyone from her original team left with her and they all own a few percent of it, cause why not. It felt so out of place, if i ever rewatch the show, i am stopping it before the eppilogue starts. Not only did it feel out of place to put it there they also added a scene of everyone cheesily listing their percenteges and then she looks straight into the camera to tell us something.