Two heroines · Ancient proverbs · Supernatural · Suspense · Sadomasochism · Counterattack
The elder sister is a fake daughter in love, and the younger sister is a real daughter who can open the door to ghosts and has been hidden for eighteen years.
After an unjust case of killing a family, one used the prison as a castle, while the other looked for justice for the wronged souls in the world under the crack in the door.
After her sister closed the door called "Love" with her own hands, she saw that her sister had been on the other side of the door, guarding her way home.
