I Have the Alchemy Emperor in My Head - Chapter 2489 - : Killing a Seventh Half-Emperor Evil God

The century long war had just ended and humanity had managed to get their hands on alien technology, sending them years ahead in terms of technological advancement, fulfilling their hope of finding life outside their planet and their desire to dominate these extra-terrestrial existences. The effects of their technological advancement alone wasn’t capable of giving this result.The appearance of mutations which granted supernatural powers among humans was another boon giving them the chance to act out their darkest desires.Their joy took a dark turn when it was revealed that they were nothing more than livestock to the mysterious race, Xillthars, who cultivated them to that level. Like fattening livestock.Shortly before this dark turn of times was a forbidden creature, Kieran who had been born into the lowest levels of a society created by the greed of humans. To him, life had always been hard, but things got worse after the arrival of the Xillthars as he found himself on a trail of shocking discoveries about himself and the world around him.

Kamishiro Homura is a hero who once by himself exterminated the another world invader that destroyed the military all over the world. However his extreme strength made the influential people ostracized and exiled him from the society with false accusation of [Traitor] attached to him. A few years after that, for an unspecified reason Homura entered the magician academy and he looked after the girls that were ridiculed as the [burden platoon]…!? This is the raise of the curtain of a fantasy tale of the unrivaled and invincible young man where not a single ally or enemy can keep up with him, the young man who sooner or later will be extolled as the messiah by the whole human race!

A high school student that has lived as a mob-character ―― Mimori Touka

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