I Fight the World with Stones

I died that day. An old man told me that I could trade my soul for my life. I agreed. He gave me an omnipotent stone at the cost of my soul. So, we started a series of transactions. Although my soul was incomplete, this time, I wanted to win. This book is also called "We Just Want to Live". It mainly tells the story of the protagonist and others fighting against this unfair world. Because everyone in his family died tragically, he embarked on a road of no return. Let's see how his life turns out this time.