Berserker... Crank Wars!

Nearly 500 years have passed since the so-called "Apocalypse" where the souls had taken control over the human vessels and grew into fierce monsters. And the humans couldn't procreate anymore. A small frail kid saved humanity from getting wiped out of the face of the earth through his strangely powerful and unique techniques and taught them to the humans that followed him. He became a legend, and from his teachings, humans were able to tap into their "chi" to stabilize their souls by manifesting their soul essence into special weapons called "cranks". A very few thousands of last generation humans that remained or stayed alive by becaming crankers now constitutes the only humanity left on the planet. And they should continue to keep levelling up their cranks by slaying monsters and siphoning their souls to stay immortal and most of them tend to form teams to increase their odds.  Everything was wrist-slittingly boring like that until one of those teams went ahead and mistakenly awakened the legend kid from his deep, and sound slumber.  ------------ Daily 2 or 3 chapters ------------ I'm an aspiring writer. And English is not my native language. So, please suggest any upgrades or changes to my story. And don't forget to comment. Writing is a tad bit easier with enough motivation. --------- Unfortunately, the book cover doesn't belong to me. I found it on the Pinterest. And edited it a little. Credits on the art goes to the original artist.