My Fake Invalid Prince Loves MeEpisode 4

A brilliant young doctor stumbles on a shocking secret: the feared war prince is only pretending to be ill to defy the emperor. To silence her, he plots to eliminate her, but she fights back with poison, threats and clever schemes. Their constant bickering slowly turns into love, until two mysterious diaries make each believe the other is secretly smitten. Chaos and stolen kisses follow, along with a feud with the throne.