Tomak: Jigu-reul Jikyeora (2001)

The gods want to destroy the Earth because "true love" no longer exists. But the Goddess of Love, Evian, still believes in humans. To prove that "true love" exists, she comes to Earth. However, the other gods only let her bring her head, to prove that what another feels for her is love, not lust. Evian's head is in a flowerpot. You have only three years to get Evian to fall in love with you before the gods destroy the world.