[Cold-blooded, ambitious villain bottom VS deceptively innocent, domineering hero top]
Fu Xuanjue, a peerless tyrant, ruthless and cunning, with all the power in the world, was just one step away from crushing the protagonist's group and achieving his ambitions. But he fell short at the last moment, and his soul perished.
When he opened his eyes again, he had returned to the beginning of the story and was bound to a ridiculous "supportive spouse system"!
System: [Ding! Strong resentment detected in Host. Binding successful! Mission objective: Help the chosen one, Ye Chen, reach the summit! Mission failure: Soul and spirit will be annihilated!]
Fu Xuanjue: ...Help who?! Ye Chen, the guy who ground my bones to dust?!
Even more absurdly, he'd been reborn as Ye Chen's minor-character fiancee, the future "virtuous wife" of the domineering hero's harem?!
The once all-powerful villain was now forced to put on an apron, cook and serve meals, manage the protagonist's household, smooth things over with his admirers, handle his relationships, and keep up a fake smile of "virtue and propriety."
Fu Xuanjue sneered inwardly: Perfect. You want me to help (fatten) you up, do you? I'll help you real good! The moment you reach the summit will be the moment I steal your fortune and rise again!
So he helped Ye Chen clear every obstacle, furiously racking up "supportive spouse" points to redeem system rewards, while secretly laying out a grand scheme.
But as Fu Xuanjue watched the once-naive Ye Chen rise at a terrifying pace under his "guidance," going from suspicion to dependence, his gaze growing more and more intense...
Fu Xuanjue suddenly sensed something was wrong.
Why didn't the protagonist look at him like a supportive spouse, but like... someone he loved?
And what happened to the womanizing, domineering hero? Why had all those close female companions been quietly "persuaded" to leave by Ye Chen?!
Ye Chen (smiling tenderly as he wraps an arm around his waist): "My dear, you've exhausted yourself for my sake. Having one kindred spirit in this life is enough. Why would I need anyone else?"
Fu Xuanjue (stiffening): "...W-wait! My revenge and comeback plans don't include this! System! This isn't how the story is supposed to go!"
System: [Ding! Target's favorability MAX, dependence MAX. Congratulations, Host, on completing the hidden mission "Capture the Domineering Hero's True Heart"! Reward... binding lifted?]
Fu Xuanjue: "??? Is it too late to run now?"
Ye Chen (chuckling as he tightens his hold): "My virtuous 'wife,' where do you think you're going?"
Theme: Win-win cooperation