Quick Transmigration: The Villain Always Derails the Plot

Wild imagination + 1v1 romance + a heroine who is always itching to kill someone

[Outwardly flirtatious but inwardly indifferent heroine vs. seemingly obedient, secretly deranged villain]

(X, 7, Z) The resentment of countless small worlds, all caused by Ji Mian's endless romantic entanglements, surges straight to System Headquarters. Headquarters sends graduate Black Cat 246 to bind itself to her and reform her in four ways.

But... why is everything going so wrong?

Host, stop right now! Have you forgotten that you only took on these missions because you were paired up?

Ji Mian: Don't worry, little sesame ball. I absolutely won't lose my composure.

246: Yeah, right. I don't believe a word of it.

Later, it watches the villain actively begging the Host for kisses and cuddles, and waves a paw.

246: This villain needs to show some self-restraint. If our Host can't complete the mission, it'll be your fault.

Someone: What does what happens between me and my darling have to do with a black cat like you? Darling, look at it, will you?

246: ...

Just destroy the world already, you manipulative, love-addled fool.

*

To cherish and love you is to call you my darling. If I don't call you my darling, who will?