Shadow Being System - Chapter 55

The notorious imperial court lackey and the meritorious military general were well-known for their mutual dislike, a pair of arch-enemies set in stone. Who could have foreseen the unexpected change in the winds of heaven: the general injured on the battlefield, both legs disabled, and even forced by the emperor to marry his nemesis.  

With one marriage edict, two people with mutual hostility are forced to marry and live under the same roof. Yet after these long days together, they come to the realization that this fellow is not truly devoid of any saving grace/unattainable and high out of reach.

- Description from Novelupdates

After Amihan, politician by day and otaku by night, died from a political assassination, she got transmigrated as the saintess in another world. But she always felt like a fraud. Why? If she was the chosen one, why did she feel so rotten inside?Also, wasn't she atheist?However, her years of forced piety and suppressed desires ended in spectacular failure - her decapitation.Three days later, she woke to the sight of a worshiper bowing low. “Welcome back, O Sun Who Burns The World,” they said.'Wait. What? I'm not the Saintess? I was this all along?'Furious at the wasted years of celibacy, moral dilemmas, and suffocating oaths, Serafine made a vow: no more pretending. No more rules. The world? Hers to ruin. The people? Playthings.But wait. It was harder than she thought because...How in the name of the Goddess Aurelia was she supposed to have her debut when she was surrounded by a bunch of suspicious and crazy beautiful women who wants to hunt her down?!This was no different from her previous world!

For others it takes dying and reincarnating for them to get a system but what happens when you get one without dying?

Aron Michael is an average student set to graduate within a week, but he was expelled for a random reason. Due to that, he had heavy student debt and no diploma to help him earn the money to pay it back. But one day he got a system that called itself the [Advanced Tech System].

Follow the story to watch him develop from your average Joe to him being the owner of the largest company in the world.

He—an enigmatic and cold-blooded soldier with a mysterious background.
She—a ruthless and bloodthirsty spy.