Even a Carp Spirit Wants to Become a Demon King

This is a story in which all living things beneath the frosty sky strive to live freely. The land is vast. The demon race still thinks it is the hero of the age, while in the Nether Realm, big ghosts prey on little ones, and the Ghost Kings dream that spirits who survive countless calamities might attain sainthood. The few surviving gods of the ancient divine court still refuse to give up their last hope of restoring the divine order. The seemingly weak human race occupies the heart of the land. Its people have grown civilized and worked hard to govern, and now their ruler, having amassed sufficient strength, vows that all under heaven shall belong to the throne! In this age of fierce contention, however, our protagonist is merely a little carp spirit in Lake Zhenze, spending his days staring at the sky and blowing bubbles, utterly ordinary. But if you could understand fish, you’d know he was actually roaring at the heavens: “Why did I get a golden finger?! This System’s name is actually the Get Yourself Killed System, isn’t it?!” Also, why is the quest reward Xiao Zuanfeng’s memories???