Forced possession + extreme preference + the heroine's counterattack + the hero's pursuit of his wife in the crematorium (sweet and sadistic interweaving)
It's not about torturing a woman and her heart, but the ultimate pleasure of "the paranoid tyrant forces her to be bound and locked up for love. The female protagonist goes from forbearing to taking control of the situation, and the male protagonist spoils her to the point of no limits and abuses herself without mercy." Binding is the ultimate expression of possessiveness. Behind it is the male protagonist who loves her to the point of madness. The female protagonist holds the trump card. The more she is tied up, the more arrogant she becomes, and the more the male protagonist loves her, the humbler she becomes.
The idea: the heroine succeeds in revenge, regains her family property, marries a top boss, and is pampered for the rest of her life. The whole process is cruelty-free and she is happy until the end.