Cubic(2014)

Cubic is a Thai drama following two sisters caught in a dangerous debt. When their father borrows heavily from a Hong Kong mafia boss and flees with the beautiful but sheltered Nunthaka, her sharp-tongued younger sister Ruthainak is brought to Hong Kong to face the furious creditor. Desperate to save her family, Ruthainak offers to work off the debt herself. Lin Lang Sur, the ruthless mob boss, initially clashes with the clever girl, but their antagonism gradually shifts as he finds himself drawn to her intelligence and resilience. Tension builds as romance blooms between captor and debtor, testing loyalty, survival, and unexpected feelings in a world of crime and desperation.