Swordmaster: He excells in all sword forms & types
Experienced: He's been at it since childhood, you see
Dense Experience: He duels/trains everyday w/o rest days
VersatileProdigy: Combines Hard Work w/ Talent & Insight
Obsessive Hunger: Constantly observes/learns from his foe
In every movement, there is a moment of maximum inertia where you can't change course
Obviously, he targets these moments
But he himself doesn't have them
Using his immense agility, he can pivot from any position/state regardless of inertia w/o expending extra energy
But that isn't the end: He can literally modify his attack's properties mid-swing (i.e add/reduce weight, change balance, etc etc)