1x13 - The Red Sleeve

Not everyone is happy with San becoming King. Late night, an attack is made on San’s life. Although San survives thanks to his Royal guard, he finds out that his stepbrother is a part of the treason. Regardless of the rebel, San is in deep grief of having to kill a family member. Meanwhile, Duk Im seems to be constantly drifting away from San due to various events. Their love just seems impossible in any way.