The scumbag male protagonist in the sadomasochism novel has countless reasons for being a scumbag, such as feuding, career first, and country being the most important.
The abused female protagonist has to go through being replaced, having her kidneys cut out, having her eyes gouged out, going to the ICU, and having her family destroyed before she can gain the affection of the male protagonist.
The heroine is reborn!
Purpose: Love others first, love yourself first