This was a cute and sweet drama that would have benefited from having more episodes. The story was largely undeveloped and moved too fast.

Even though I liked the chemistry between the romantic characters, there wasn't enough time to properly develop any of their relationships. I wanted to see how the king actually came up with the writing system, the romance, and the friendship between Dan Bi and the queen. The queen was portrayed as a lonely young woman who just wanted to connect with someone, so she intended Dan Bi to become her friend by making her the king's concubine. This was an odd choice, but there was meaning behind it. The writers also teased us with romantic-ish relationship between the queen and Park Yeon, but it was largely unexplored. The gender bender trope lasted for longer than I wanted just to be explained at the end that the king always knew that Dan Bi was a woman. Hence, him rapidly falling in love with her without questioning his own sexuality was justified.

One interesting thing was that many characters in the past looked like the characters in the present, but I didn't feel like there was much explanation given as to why.

Overall, this is a cute piece of fluff with a happy ending, that doesn't offer much depth because of the short length.