I loved the first season and couldn't get myself to like the second. And I will explain the main reason.

In my personal opinion, I think that Jang Uk didn't need to fall in love with someone again, because he already "loved" Mudeok at least until the beginning of the second season. In ep 1 Uk was near the stone tower "pining" for her to come back. And she came back but without memories. One of the big problems is they dragged on amnesia for a long time..
The sisters could have made the connection between soul mates in a completely different and more convincing way for everyone. And than to see Uk simply move on from Mudeok......

Moved on from Mudeok in ep 4 and falling in love with "another woman" (because he didn't know it was her until ep 9), that was the true and great love Jang Uk had for Mudeok???

I read reviews around here and realized why this happened. Anyway....