Dark Stone Prequel

The road to growth is always full of regrets; A chance encounter, The ordinary Yu was chosen by the mysterious person. The mysterious man gave him a black stone, and takes him into a whole new world. There is no advanced technology, and there is no convenient network. But there is a strange object called the magic stone. People who awaken the magic stone can cultivate the magic stone and improve their magic power. And use this to gain a higher social status. The protagonist relies on the black stone in his hand, What kind of life will start in the world of magic stones...