Hachimitsu

In my previous life, I was cruelly exploited by my wicked stepmother.
Not only was I drained of my military discharge money, but I was also driven into a subterranean warehouse that could collapse at any moment.
In darkness and despair, I was frozen to death by a cold wave that dropped surface temperatures to minus 60 degrees.
The moment I opened my eyes again, I had reincarnated back to three days before the outbreak of the cataclysm!
Staring at my stepmother's face, which was filled with greed and harshness, I wasted no words, threw on my heavy coat, and marched straight toward the underground warehouse.
For I knew that with sufficient supplies and energy, this nuclear-grade subterranean warehouse would become the ark of the apocalypse!

The aliens invaded. A toxic fog rolled in. New York turned into a living hell.
But I was forced into a tight spot. A strict Mother Teresa System bound itself to my soul.
I had to save everyone. Betrayers, killers, enemies—it didn't matter. If I didn't help them, the system would execute me on the spot.
Everyone mocked me.
They thought I was soft. The shelter captain stripped my weapons and threw me out into the dead zone.
They thought I was a dead man walking.
They were wrong.
They didn't know my system rewarded me with the ultimate Light ability.
So, get behind my blade.
I am going to save New York, whether it likes it or not.

The apocalypse has arrived, but I am merely the villainous master in a doomsday novel.

The mission given to me by the system is to humiliate my kind-hearted fiancée, Avery.

Looking at the only dry rations left before us, I stomped them into pieces right in front of all the wasteland refugees, grinding them into the muddy ice and snow with the sole of my shoe, and commanded condescendingly:

"Bitch, lick it clean."

Instead of running away, she trembled and knelt before me submissively, lifting her head with a look of near-morbid attachment burning in her eyes.

Wait a minute, didn't the original script say she would become my mortal enemy?

Why is she kissing me?