A Blood Pledge(2009)

We're gathered here to pledge to die together.

A Blood Pledge is a South Korean horror film about four friends who make a suicide pact on a school rooftop. When only one girl actually jumps, her ghost returns to torment the survivors, demanding they honor their pledge. Consumed by guilt and fear, the remaining friends must confront both the supernatural terror and their own dark secrets as the haunting intensifies. The film blends psychological horror with the supernatural, exploring themes of friendship, betrayal, and the consequences of broken promises. As the ghost's grip tightens, the friends realize that escaping their pact may be impossible—and that some debts can only be paid in blood.