Was the main protagonist Shin in the manga Kingdom a real historical figure?


As the question suggests, I wanted to ask if there really was some commoner
like Shin in _Kingdom_ who became one of the greatest generals of Qin Dynasty
in reality or according to the Warring States-era history?




Yes he was. He was based off Li Xin.

Here is a great resource describing many of the similarities / differences:
[link](https://magaxking.wordpress.com/2015/05/14/ri-shinli-xin/)

