If I'm being honest, I watched this without knowing anything besides the fact that Wi Ha Joon was in it. Bro, go watch it. It's so good and the story, characters, and production is very inspiring. The cast is perfect, the story is perfect. The ending is also really impactful, and you can take in a lot from this drama. I can't even describe how I felt after watching it. Usually after finishing a drama, I would want there to be more in the story. But the ending felt empty but complete, not in a bad way. The actors made me feel some type of way, especially Wi Ha Joon. The story his character had and how he interprets Jung Ki Chul is the best. (Also, very attractive). But anyways, 10/10 for sure and totally recommend because the story isn't basic, and the writing is far from bad.