Sharp:: 自分's words cut sharper than any sword
Mind:: Ascended to the [Narrative Plane]
Narrative Plane:: Is where 自分 operates on reality itself
Transcendent:: 自分 transcends traditional swordsmanship
Refutation:: 相手's attacks/defences are nullified
Swordsmanship's like argumentation
You form an argument(自分 | attack/defence), support it w/ evidence(technique/power), & refute counterclaims(相手 | attack/defence)
All of that's metaphor
But in 自分's case, it's different—swordsmanhip itself becomes argumentation
Only 自分 can ascend his mind/soul into the [Narrative Plane], where he can immerse his words in the narrative into his sharpest blade