Kingdom : History is rewritten

A modern day army veteran dies struck by lighting while playing Total war Three Kingdoms. His death only marked a new beginning as he woke up at a 12 year old kids body living in 260 BCE during the warring states period of China. Thrust into a bloody era, will he be able to defend his nation or maybe become the conquerer himself? What will his presence bring to the history itself? Read to find out! Kingdom manga AU with a few generals from the Three Kingdoms period.