So much promise. Concept sounded intriguing. But....sigh....falls victim to common issues that plague Korean television shows.
First, it attempts to weave so many plot threads into each show that it becomes a frenetic mess. There are too many people, doing too many things, at too many times. And often, too fast. Or slow.
Second, the minor characters inserted for comic relief aren't funny. They're annoying and whiny at best, severely cringe-worthy at worst.
Last, there are too many vague and ambiguous flashbacks that deaden the flow of the story. In fact, the flow in and of itself is a big problem. The show was 10 episodes. It could have been six. Maybe even five. I get it, the flashbacks are supposed to add mystery. But they just don't work. There's no emotional investment in any of them, or with any of the main characters outside the lead two ladies (who do a yeoman's job carrying this slog of a plot).