MTL - The Squeamish Little Brother of the Actor - Chapter 62 see how he explains

A world destroyed. An axe to grind. And a path to infinite power. Welcome to my reality.When the cultivators came to Earth, they destroyed our entire civilization in a matter of hours. Armies fell, cities burned, and that was before the moon turned red and filled our world with monsters.Now, over a decade later, what’s left of humanity slaves under the heels of our Qi-infused masters. The luckiest of us might even become one of them, they say—if we serve the Dynasty well enough and harness the power of Qi.But I want none of that.I’m sick of serving and I want nothing to do with their world. Instead, I want them to pay for what they did to mine. Maybe that’s why she found me. The fearsome, angry goddess who showed me a different path. Apparently, Qi is not the only route to power.Now I’ll fight to take back my planet, to grow strong enough to beat the cultivators at their own game. Through blood, sweat, and pain, I will free humanity or die trying.For that’s the Path of a Berserker.Path of the Berserker is a progression fantasy novel that contains immortal cultivators, an oppressive intergalactic dynasty, rage-inducing imperial bureaucracy, magical spirit beasts, fantastical martial arts and one pissed-off MC who’s sick of it all. Fans of western-style cultivation fantasy, post apocalypse, and xianxia will enjoy.

In the year 2220, a radiation source in the Pacific Ocean, tens of thousands of times stronger than a nuclear bomb has begun mutating exposed creatures into horrific monsters thousands of meters long. Mankind’s only hope was nuclear weapons, which only made matters worse. The combination of the natural radiation and nuclear radiation released an incurable and highly infectious virus, turning the 90% of the world’s population into violent zombies in mere weeks.

Once I’ve become Immortal, then my attempt to conquer the world shall begin.

The Revered Master, Yu Yan, known as the number one in the cultivation world, waited for sixteen thousand years, and finally took in a disciple. He taught her carefully, and took care of her diligently. He watched her as she slowly grew stronger as she comprehended the laws, and just as she was about to soar into prominence… she died!