At least he had the potential to put an end to Aizen.
Yet at that moment, Aizen was still absorbed in the slash Nara Dan had just unleashed.
That stunning strike had made Aizen sense a hint of danger.
Not much, but it was unmistakably a threat.
Swordsmanship that could overcome the difference in Spiritual Pressure and increase its power...
By catching a certain rhythm and condensing one's will, it achieves a slash that can cross all boundaries.
Truly terrifying.
Aizen narrowed his eyes as the gloom in his heart slowly spread.
With talent and growth like this, even someone as self-assured as him felt genuinely threatened.
If his battle with White Hollow had completely piqued his interest, then witnessing Nara Dan and Gin Ichimaru fight at such close range
had undoubtedly given Aizen an even deeper sense of Nara Dan's unfathomable potential.
This kind of swordsmanship...
This kind of power...
It doesn't rely on a Zanpakutō or the Spirit Body itself.
Essence, Energy, and Spirit are all entrusted to the blade.
Compared to ordinary methods...
It has a better chance of surpassing the limits...
Aizen's insight went without saying. As a top-tier powerhouse and scientist, he was better equipped than most to perceive the essence of Nara Dan's swordsmanship.
It looked as though Nara Dan was practicing a certain kind of swordsmanship, but in truth, this method of unleashing a slash that cleaved through heaven and earth had already surpassed the level of technique.
It reached the core of the great path—the source of power.
That meant Essence, Energy, and Spirit; will; imagination; and destructive force.
It had evolved swordsmanship meant to fight people into a method of condensing will and immense destructive power, reaching all the way to the core of power.
*Perhaps I really can't let him