Amazing acting, Amazing story and plot, amazing cast.
Loved that YI Seo was the main female lead. Even though you can't tell at the beginning.
Loved the revenge.
Good guys won and bad guys got what they deserved.

It wasn't half finished nor did it leave unfinished businesses, maybe beside one minor thing, which is not that important anyway.

I rated down music because i am not interested in music. I rated down rewatch because i am not that into rewatching it. but i really enjoyed the drama. finished it in like 3 days i think. haha