Traveling through time and space for what purpose?
Isn't it to repay him and accompany him through this last life?
But why did it hurt him in the end?
Why would you choose to give up your comfort and determine to help that person who is arrogant in the world?
Why are you willing to turn into a man and become a little military advisor?
I, who know nothing, have nothing else to offer you except strategies and tactics...