Aramintai

Why would it have been another soul?
Furthermore, her body continued exhibiting all the Bu-Yeon soul's powers. And when she was talking with Naksu inside the ice stone she was annoyed of Naksu's continued exploitation of her body.
As for why they showed little Bu-Yeon inside the ice stone - it has no defined shape and Bu-Yeon has strong connection to the ice stone. Perhaps the ice stone posesses collective consciousness and Bu-Yeon can tap into it.

Yea, you do that. But I rewatched part 1 very recently and I'm telling you - seeing energy was solely Bu-Yeon's power. And even Uk mentioned it in part 2's episode 1, it seems it was a well known fact.

Yea, I'm really digging his imposing black attire.

What? No, she washed ashore and was taken in by some grandma in Sari village, and raised as Mu-Deok. But you can argue that she should have died in her mother's womb, if only she wasn't birthed with ice stone's help.

Yea, what the hell? Just because he wasn't strong enough to fight a berserk op assassin? Or because he was friends with Uk? Ffs, some reaching logic here.
She also needs to stop listening to her mother's delulu crap and think for herself sometimes. She clearly knows that what they're doing to FL is wrong, but still obeys her.

It's Naksu and Bu-Yeon in one body again, but now in Naksu's. They're doing strong plot reversal things in part 2.

kisskh.me

No, just go watch that episode again. Mu-Deok saw the jade right through the box as energy. It clearly wasn't an ability Naksu was capable of, she was confused of it as well.
And it was stated that Bu-Yeon saw energy in living things and artifacts. And it helped her to walk around so well, people in her village even suspected her of lying that she was blind. So it's obvious it was a display of Bu-Yeon's powers.

But feel free to disagree, we'll see whether Bu-Yeon is still there along with Naksu soon enough.

Yea, that's rather unlikely at this point. But maybe JSM appearing in guest role is not a hoax and we'll see Bu-Yeon in separate body in the end?

He's very insecure in general. Otherwise he'd not be so jealous of Uk. If evidence left by Jang Kang about Uk being late king's son will be revealed, I'm sure CP will become even nastier and may order for Uk to be killed.
I'm sorry to say this, but CP is on the dark side now.

I think it may have something to do with King's star. Uk has a fate written in the stars that should be similar to Songrim's founder from 200 years ago. Perhaps the drought as well as the stars alignment are linked, it can be just a recurring natural phenomena.

No, she could see it even through other material. Remember that box with ying yang jade? Mu-Deok was able to clearly see jade's energy right through the closed box and Naksu inside was baffled how the ef she managed that.

Sensing energy by touch and seeing it is different. The ability to see energy was solely attributed to Bu-Yeon as her special power. That's how she was able to walk around normally while being blind - she simply saw energy around her.

Jin clan are notorious for being big fat hypocrites.
And for being dumb.
And for being insidiously evil.

Where do you want real Bu-Yeon? I hope not in Naksu's body. That's just gonna be messed up. She's not FL, but a peeping tom with great powers. Her character is unknown.
Tbh, I don't really care what happens to her in the end, as long as she'll have a clear resolution to her plot, be it fused with Naksu forever, or separated into another vessel. But her mother doesn't deserve her back, for sure.

I dislike what the Crown Prince turned into. He became a very petty and jealous man. Jin Mu's influence is strong in him now.

Interesting theory. The drought is coming for sure, but what is the cause of it? Natural phenomena, or someone is at fault?

She sees energy and saw the ice stone inside Uk - that's Bu-Yeon's powers, not Naksu's. But she's also not blind, so it's not solely Bu-Yeon inside either. And also, if it was solely Bu-Yeon she would have been doted upon by mama Jin, instead of being given a cold shoulder and a prison room.

Yea, Cho-Yeon sent numerous red flags as well. That's why I'm saying this, she needs to step away from her mother's shadow, or she will never be happy.

Yea, those Jins are bad news. Cho-Yeon needs to overthrow her mother and send her to the mental hospital or something. Otherwise she'll just turn into a crazy and cruel copy of her mother.
And Jin Mu just needs to die. Why Uk still didn't kill him is beyond me.