How many past events can be relived? How many missed opportunities can be changed? How many endings can be rewritten?
Everyone has more or less some regrets in their hearts, but the past cannot be revisited and re-edited, which is the main reason why regrets are hard to let go of.
Now, "Looking Back" is right in front of us, and no one is unmoved. Faced with this opportunity to erase regrets and change past sorrows, everyone is deeply touched and wants to alter those former regrets.
The mysterious Old Farmer, with his astonishing combat capabilities, missed the final battle of the last civilization, leaving him restless for eternity, filled with too many regrets. Now, he has chosen without hesitation to return to a thousand years ago to fight that ultimate battle.
Even though history cannot be changed, he still chose this path, perhaps believing that the significance of that battle was more important than his own life.