I am very surprised that A LOT of people object to this drama's love triangle. After watching the trailer and reading the synopsis, there shouldn't be any surprise about the love triangle being part of the plot.
Although I am not against the predictable love triangle story, I find myself concurring with the majority in objecting the love triangle for a few reasons:
1) the FL is really not a good actress. She cannot emote feelings through expressions and eyes acting. Her eyes and face are expressionless, not because she's a stoic character, but because she cannot express her character's emotions. She's supposed to be a complex person: she has been abused by her mom, she's poor, she wants to get ahead; on other hand, she has feelings for the ML. She's not supposed to choose love and yet she did!

I tend to feel sorry for this type of character; and yet, I don't feel sorry for her. I feel sorry for the MLs though ... because they act out their characters convincingly. So far, she's not convincing.

You can do a comparison (for example the scene where she is being harassed by the gangsters) ... observe Tae Oh and her ... what a big difference. His face, eyes, and body are natural. Hers looked unnatural ... I couldn't tell what she was feeling.

2) There is so much going on with the MLs and their backgrounds that the writers didn't spend enough time to develop the FL's story. The blending of her into the team is not smooth. Maybe they should have let her join the team in a capacity of a smart girl who has some skills to help out. And then the romance starts to develop as the guys understand her better.

Instead she is reduced to being a cliche female in a love triangle ... It's ridiculous that in 2024, women are still being treated as a sidekick ... she's attending the best college in Korea, she's smart ... I don't see why she is being typecasted into a plot of a love triangle.

And I don't see why she has to depend on a man to move up to a better life???? Unless Korea as a society doesn't give women opportunities.

Disney should re-examine what they show on their channel! So much for their support of equality. The cinderella story is still being perpetuated in 2024!

Eps 3,4
Ep 3 is confusing ... things are just presented like a bullet points ... The whole episode is set up so that they can show the machinations of the stepmother and son #2 ... and how ML choreograph the take over step by step. Surprise surprise ... the FL continues to be a bad actress.

Ep 4
I don't like the way the story is presented. The viewer is tricked into believing a bad scenario only to be surprised that there was a plan that made everything ok again. You can only do this trick once ... They employed a couple already ... made the story flow confusing and disengaging.
Now the surprising conversation reveals the ML#1 cares so much ML#2 ... maybe something is lost in the translation ... "You are the reason ..."
If I were ML #2 I would be asking why ????

Ep 5-6
Story is getting predictable. Plot of double-crossing is getting old. Inha's father gave the biggest clue of all: Inha is like his father. LJY is a very good actor in this drama. His eyes ... wow ... show the psychotic and unpredictable tendency. It's easy to act as a straight good or a bad person. But harder to act as an evil/amoral person. He almost gives that Anthony Hopkins vibe in the Silence of the Lamb.
At this point I am indecisive as to continue to follow this drama any more ... It just doesn't make sense to me about the FL's fear of her mom. Maybe I don't understand Korean culture.
I don't feel the relationship between the ML1 and FL is logical or emotionally developed. There doesn't seem to be chemistry between them. I feel it's contrived.

7-8
OMG, I couldn't imagine the story could get any lower but it did. Nothing makes sense. Everything is contrived. Going to drop it NOW.
FL continues to be a drag. The only good actor is the 2nd ML who acts his role so well.
8-9
At this point I am just FF through to see how bad it can get. OMG, the actress is so bad at acting that I couldn't tell if she was hurting or happy when she discovered HTO had escaped the prison ... I thought ohh, maybe there's something there ... NOPE, just bad acting!
As predicted from last week, the Chairman came to the rescue.
My prediction this week: the chairman will wake up ... he's has 9 lives!

10-12
Sorry I had to go back and lower the score to 6 so that I can save some people from watching this ridiculous drama. I just saw the last 2 eps and omg, don't these writers know how badly the story is written? I hate it. It just doesn't make sense ... Yeh right ... like the heir miraculously turned to be the hero who is not related to the Chairman by blood. When does that happen IRL? NEVER! We are talking about Korean family run business here! And then that CM lives on forever... he has 9 lives ! As predicted (and this drama is so predictable) he wakes again!

FL remains the sore point all the way to end. Not sure what her role should be? Why do women always have to focus on themselves and stay lonely to get to higher places??? OMG, we are in 2024 right now and still have to choose either career or love???? This doesn't make sense and so outdated!

Another thing that's wrong with the ending is the suicide of the ML. Korean society already have one of the highest rate of suicides. Why put this in the drama ending to emphasize that dying is the only way to redemption. NO! Redemption is done through serving time in the prison!