"Nothing is perfect, thus, my sword embodies nothing/wuji" 自分 accumulated epochs of swordsmanship, allowing him to deconstruct 相手 & all phenomena w/ a sword. In the final clash, 自分 realizes upon contemplation, finding that the history of his strikes forms a [Perfect Mandala], thus, 自分 perfects his history, his strike guided by the Mandala as his Accumulated History strikes 相手 w/ fatal force.