Hold Hands and Live up to the Passing Years

That year, there was a person dancing for her under the pear tree. That year he went to the battlefield, and she followed him despite everyone's objections. That year, he became a prisoner in the main hall, and she knelt in the princess mansion for three days and three nights. Their relatively stable life that year was finally destroyed by the world. That year, he hugged her and said to him, "In this world of chaos, in the next life, you will take me with you." Go to a place full of pear blossoms, where we will never be separated and never be disturbed." After saying that, she passed away and could never open her eyes again to watch him dance the sword for her... (I think it is a pet novel, and it will be a little bit sadistic later)