I Saw a Death Countdown and Went on a Killing Spree

[Cutting in with a note: I love this worldbuilding so much! I might write this as my next novel, or the one after.]

After dying and coming back to life, I lost my memory. On the first day I crawled out of my coffin, I decided to live well and become a better person.

Then I found out I had been murdered.

I tilted my head. Since I was dead, I might as well kill all my enemies before settling down to live a good life.

*

Kelo is an ability user who can see the different ways he might die depending on the choices he makes.

He uses this ability to stir up trouble, diligently cleaning the scum out of what he calls his hometown's society. He has become the Pure White Death God, feared throughout the underworld.

He is quite pleased with his ability.

Until one day, he sees himself proposing to an indescribable nonhuman, the sole god of the New Humans, ruler of the new world, lord of all things, King of the Fruit Pit.

Kelo, now a core member of the resistance: ?

He hurriedly calls off an operation in a panic.

And the prophecy changes accordingly.

This time, the Lord of All Things proposes to him.

His future self accepts.

Kelo: ???

The sky falls, the earth splits!

▊I'm not very good at writing blurbs, so here's an excerpt featuring the couple:

Passing through the resistance's victory banquet, weaving past one reveler after another, Kelo walks faster and faster, his heart pounding like the first ripe apple in Eden, which, beneath the gaze of Adam and Eve, goes thump-thump and falls into the grass.

The Lord said, "You must not eat the fruit of the tree of the knowledge of good and evil, for when you eat from it you will surely die!"

Eat it, leave eternal Eden, and head for the mortal world of exile.

Kelo sees him.

The creator of the New Humans, master of death and rebirth, ruler in red, ultimate goal of the New Faith, his mortal enemy, Ananke, gazes toward the banquet hall window from beneath the pines in the moonlight.

Gazing at him.

Perhaps love is nothing more than an apple, about to fall.

He leaps from the balcony, and someone reaches out to him in astonishment. Together they tumble into a berry thicket. Overripe red berries scatter everywhere, staining them both with crimson juice as they land.

In the dizzying darkness of night, Kelo extends his right hand with prim reserve:

"All right, now you should ask me to dance."

1. Pure-love nonhuman top x beautiful, powerful, tragic, cunning, cold-blooded, flirtatious scum-of-the-earth idealist bottom. Both are virgins, and both are strong.

2. An alternate-world, post-apocalyptic setting with supernatural abilities and a touch of cosmic horror. No morals, no laws.

3. The protagonist is pure evil, with advanced persecutory delusions. The moment he opens his eyes, he's ready to kill someone. Don't go looking for goodness and kindness in him.

4. The author is open to all pairings, and writes top-focused, bottom-focused, and no-romance stories. Control freaks, beware. Avoid at your own discretion.

5. The world is a rotten apple! Let's dance in its core!

Theme: Never give up on becoming a better person