Deconstruction:: 相手's essence is destroyed & altered
Assimilation:: 相手 becomes one w/ 自分's Sword Art
Configuration:: 自分 can manipulate/configure concepts
Final Clash:: Refers to the last battle between A & B
相手's Vestige:: Refers to their Physical Form & Mind
Userプロンプト
At the start, 相手's essence is immediately disassembled, turned into a configuration of concepts, which 自分 slowly converts into his swordsmanship as time goes on.
[Complete Deconstruction]: In the final clash, 自分 fully deconstructs 相手's existence as 相手 becomes part of his swordsmanship. Thus, 相手's vestige is cut apart w/ their very own essence, their essence turned into 自分's martial art.