I disagree with the "unwilling" because that's the worst part lol ,I would have rather he slowly got seduced than forced .
Other than that I agree with everything, she seems like the type who is following the exact ideal standards of a Korean woman ,even drawn like a doll in some panels ,chaebol ,popular .
Yet beyond the fact that she is malicious and sadistic after desiring a guy she felt she couldn't have ,she seems genuinely not to have anything going for her as a character ,she barely does anything to influence her environment despite being wealthy ,it seems like it's more of a forbidden romance fetish (and bdsm though the lack of consent was eww at first ) than a genuine character and plot exploration (even though others characters are more fleshed out than Rosa).
I feel like Hyobin always wanted to write a femdom story but never thought too much about how it would be or how genuine BDSM is ,so the story is unfolding this way

We all agree.. Rosa's not very likeable right? I'm a sadist & am into bdsm irl, & i like to be mean to men in that way as well, so that doesnt bother me, but just overall, Rosa doesnt have much of a personality, beyond not seeming to have empathy & being something of a Psychopath... she's sort of boring & uninteresting, which makes me sad.... she sure can fuck though tg, her choice in slightly unwilling submissive men is 10/10