This was brilliant….. Just loved the writer’s ability to tell the background story whilst in modern day times without too much tooling and froing. The actors also did brilliantly. Love love loved both Nana and Jang Dongyoon, they made me stay. Their chemistry is EVERYTHING, hoping for more projects of them together. They compliment each other really well!!. Side characters had such great character development as well. I cannot fault the director on this one. So so good, rewatch value a 10/10