The first season of this drama had everything right:
- good story,
- brilliant Female lead Jung So Min as Mu-deok/ Naksu
- sympathetic Male lead Lee Jae Wook as Jang Uk
- well written characters
- impressive villains

So watching Season 1 was a really pleasant experience ... until it became known that for season 2 they will replace female lead Jung So Min with Go Yoon Jung. She is the actress who appeared as Naksu for a few minutes in the first episode ( Lake scene ). To put it mildly I think her performance in that episode was expressionless and emotionless with no charisma.

Indeed I was not at all impressed of this drama before Naksu's soul shifted to Mu-Deok and Jung So Min game along. She is talented and charismatic actress who is also able to express all needed emotions.

I suppose that season 2 will be a big disappointment for me.