So my guess for some of these questions:
Beom-ji is the flower from the underworld- remember he said he thought hed been there before and he remembered the little boy plus his mom prayed to the underworld for a son and he has they same color eyes and the color of his powers are the same as the blue flower(plus some other reasons there are a lot of clies if u look closely). Also yoon-jae is the little brother's reincarnation so just like the little boy could see spirits, yoon-jae could since they r the same person. That was pretty much confirmed by the brother. He even said in one scene "are they even similar in this sense" talking about his ability to see ghosts. But it was largely insinuated that he is the reincarnation of the little brother. But I don't know anything about yeom-ra I would like to know as well.
I thought Yoonjae was the reincarnation too at first, until I saw the brother near the end who showed up and said that he has always been waiting for older brother or something like that. So now, I’m not sure since the brother spirit is there and didn’t get reincarnated, who is Yoonjae?
I really like how this plays out from plot to characters, everything is really well done. But, I still have so many questions unanswered. Technically, everything’s resolved since Yeom-ra’s dead but I still want to know more about Beomji’s background and Yoon-jae as well. Like what’s the deal with Beomji’s power? How is it that Yoon-jae was able to see spirits since young? What about that flower Yoon was caring for in the underworld? Was that Beomji or not? So Yoon-jae is not the reincarnation of Yoon? What happens with the sleeping king? How about Yeom-ra’s background and how he ended up in the underworld?
Where are my side stories???