Poong, the Joseon Psychiatrist S02E05 - All Princess Seo Yi Wants Is Se Poong

To Princess Seo Yi, nothing matters as long as she can wed Se Poong, and this causes a tilt in the well-balanced relationship between Se Poong and Eun Woo. Se Poong watches the Princess closely and finds a certain pattern in her behaviour, but it's still not enough to cure her. Se Poong eventually obtains some of the missing pieces to the Princess' puzzle during his trip to Hanyang.