Introduction:
"The sister of the ghost marriage agency was forced to use the ashes of her dead brother for a ghost marriage, but found that the wealthy client had secretly replaced her brother's heart. An organ robbery in the name of love triggered the backlash of the Yin and Yang contract, and the sickly bride demanded her husband's obligations from the ashes."
(Core conflict: scientific plunder vs. Supernatural backlash; emotional core: protection vs. Possession)
