River Where the Moon Rises S01E10 - Lying To Lady Sa/The Secret Training Sessions

Part 1: Ga Jin and Dal come to Ghost Valley to live with Lady Sa. They lie to her that they are now married, hiding the fact that they are there to train Dal in swordsmanship. However, Lady Sa has a hard time accepting the princess as her daughter-in-law. Meanwhile, Geon becomes the Crown Prince's trainer, but the young prince refuses to leave his chambers. Part 2: At Ga Jin's request, Lady Sa starts giving Ga Jin all sorts of household chores befitting her new role as a daughter-in-law. In the meantime, Ga Jin trains Dal in swordsmanship and military tactics in secret. Meanwhile, Mo Yong finds herself in trouble after seeking out a fortune-teller, and Geon finally gets the Crown Prince to begin training with him.