After My Nemesis and I Became Villainous Parents, We Fought to the Death

[What's it like raising a child with your mortal enemy?]

[Coolheaded, unstoppable assassin heroine x technically minded male lead who loves and hates with equal intensity]

From the start, they both die and are reborn as the parents of a villain in another world.

Their mission is to change the villain's tragic fate and help him grow up healthy and loved.

And so, two sworn enemies pretend to be husband and wife.

Though their cover is full of holes, they're united when it comes to their mission.

One second:

The villain has been kidnapped?

The next:

Your Kill-or-Die delivery rider has accepted the order.

*

The moment the villain opens his eyes, he discovers he's returned to the past.

His parents didn't die in a car accident, and he wasn't sent to an orphanage.

Without anyone noticing, he secretly hides inside his younger self's body.

He watches his own life, occasionally coming out to experience it for himself.

Having parents feels even better than a rain of lollipops falling from the sky.

But there's one really annoying thing.

Can that loudmouth inside his body please disappear?

*

Three people who've never known love learn by imitation and save one another.

Later on, they'll return to the present, where the heroine and hero will join forces to seek revenge.

All-around assassin x computer genius

*

P.S.:

The heroine feels a spark early on but won't fall for the hero. She only starts to accept him after she kills him.

Reborn as the parents of the villain alongside my mortal enemy: loving and hating each other to the death