Doomsday Star Crystal: I have a contracted beast army

[Power evolution] [Egoism] [Rebirth] [Dark humor] [Early development, lone wolf] [More women, please don’t enter if you mind]
A meteorite rain came, and the whole world collapsed and destroyed. Most people turned into terrible monsters. Animals and plants were no longer resources for survivors, but became hunters.
With the meteorite rain comes star crystals, which can produce extraordinary food, weapons and equipment, evolution potions, and supernatural bloodlines...
This is the end of the world, a hell for most survivors!
But for evolvers and superpowers, this is paradise...
 Zhao Yin was reborn and returned to the pre-apocalypse to seize the enemy's SSS-level superpower contract soul... In this life, he just wants to lead his partners to live a better life.