Do you think it's the most bloody thing to be struck by lightning and travel through time after doing something brave? No, you are too naive. Do you think it is the most miserable thing to travel to an imaginary dynasty without knowing the language or history and being unable to control one's own destiny? No, that's not enough. Do you think I went through nine years of compulsory education in vain? Is it the most outrageous thing to have to play the role of a baby again and go through the growth period again? No, you are too kind.
In short, it is the growth history of a modern person who travels back to ancient times from a white boy to a sinister person.