His Nighttime ObsessionEpisode 4

Heiress Lydia loses everything—family bankrupt, father dying, sister hunted. She makes a deal with Rian, Dynasty family's ruthless second son: seduce his brother Leo. It's a survival game. But Leo hides a dark secret, and Rian shows her unexpected tenderness. What begins as cold revenge becomes a trap of the heart. In the abyss, they become each other's only salvation.