Combat Exp: Fought for a literal Eternity (Infinite)
Seen It All: Already knows how to counter 相手's power
Unchanging Fact: No matter what, Allston will aways yearn
Current State: Yearning in a state of Intense malaise
Unassailable: 相手 never gets to harm nor touch Allston
Eternity
He lived all his life in The Limbo Dimension yearning for something he has already forgotten, & it has driven him mad
His swordsmanship reflects this, aimless yet instantly manifesting any outcome he momentarily wishes
This is a miracle that bypasses all defences/nullifications/etc all the way to their fundamental functions—an inimitable power whose ousia were ingrained in his very soul