Everyone knows everyone by 6.6 degrees of separation. Here everyone knows everyone by a maximum of 2 degrees of separation and everyone has an extremely tough fate ???

I don't want to say that the show is bad and Cha Eun Woo - I don't really like him as an actor - has made some really good progress in terms of acting, BUT - the story is really far-fetched. What I like is that someone is either good or bad, but - like in real life - has weaknesses and grey areas. So far so good, but what I find really ridiculous as the show progresses is that everyone knows everyone and everyone is intertwined. There can't be so many intertwined fates.