Earthly Sword:: Represents his Earthly Connections
Severance(分割) : Represents him becoming enlightened
Swordless Sword:: Achieved w/ 分割 as he wields the spirit
The Right Sword:: 自分 realizes the 8-Fold Path w/ his 分割
"All my life, I had been blind" 自分 reflects as he effortlessly deflects 相手's attacks, not even acknowledging them
"But it is only in this moment that I can finally [See]" 自分 says at the end as 自分 finally looks at 相手's eye—no, rather soul w/ clear yet vacant eyes
"It was right in front of me" 自分 says at last as he severs(分割) not just [Connection], but cuts(割) 相手, becoming unassailable