Conquering the modern world without killing

A middle class boy rise from ashes, conquering his country,then the modern world by using his brain. No reincarnation,no special power only brain Avg 1 chapter will be release daily,min 3 per week and max 10. With each 5 power stone 1 bonus chapter will be released. This is my first work so there will be many mistakes. Hopes you will point them out so that I can improve it.