I was expecting the end to be different. Since her soul is supposed to be dead already. Considering he possesses So Yong's body, the king did fall in love with his strong positive personality. Bong Hwan as So Yong lived with Cheoljeong and had a baby as a successor. After a few years, when their son is old enough to be 'voted' as the new ruler, they depart in a their own house outside the palace, were they were killed, and only then he was able to go back to his body. Learning that, he was not a different person from So Yong, but an actual reincarnation of hers.
And where they'll be showing Jang Bong Hwan's present since he is the main character of this story. He wasn't given to much of his own background story like the people in the palace. The only thing I know about him is that he's a high class chef, a playboy, and that's it.
So I was kind of hoping to see JBH, seeing the people from the palace into his own present, as reincarnation of themselves, having the same personalities with different lifestyles. And the king, is reincarnated into a girl as Seo Ji Hye, that possesses his same personality, and is planning to run for presidency. He and she fell in love completely, once again. Then he'll be the First Gentleman of the Blue House of the Republic of Korea.
The end.