This drama felt like an utter disaster, and I’m struggling to even begin describing it. The plot description was deceptive compared to what actually unfolded on screen. The family dynamic wasn’t as central as indicated; the narrative largely focused on the father's perspective. We were shown a deeply fractured family from the outset, but contrary to what the synopsis implied, they didn't unite or support each other—they simply endured this difficult situation together. While there were several themes explored throughout, ultimately everything was undermined by incredibly flawed writing; it might have been passable for an average action movie filled with fight sequences, but not for a ten-episode series. The show seemed to be headed in a better direction by episode four, but the writers persisted in making poor choices, intensifying those issues around episode seven with the father's introduction. They compounded these errors further when they tried to force numerous flashbacks into the final two episodes, seemingly attempting to manufacture an emotional climax. The adult content rating appeared to be included solely as justification for characters smoking cigarettes constantly—Kang Joo Hyun, in particular, was shown smoking in every scene she appeared in. A distinct lack of imagination was evident throughout. What I found most irritating was Dong Ha’s unwavering composure; he never seemed to lose his temper or raise his voice, even as his life fell apart from all sides, with the single exception of a completely unrelated outburst at his students. The final episode felt rushed and superficial, offering no opportunity for meaningful dialogue or action—it was essentially clearing out characters who wouldn't be featured in any potential follow-up. Despite all this, Netflix had the nerve to hint at a sequel!

Source on TMDB