Yoo Seung-ho chose Kim So-hyun.
He wasn't afraid to risk his life. Everyone tried to stop him but he only thought of Kim So-hyun.
On the latest episode of the MBC drama "Ruler: Master of the Mask", Han Ga-eun (Kim So-hyun) found out who the Prince (Yoo Seung-ho) really was.
Lee Seon (L) received an antidote from the prince.
However, the court lady who ate this antidote threw up blood and died. Lee Seon thought the Prince tried to kill him and told Dae Mok (Heo Joon-ho) who the real prince was. Then he bowed his head and said he would do his best if he was made king.