The higher the grade of a Sorcery technique, the greater the requirements for the practitioner's innate talent and aptitude. Some Sorcery arts even require specific unique constitutions.
The Ghost Eye Bewildering secret manual was one such technique. It required the practitioner to possess a strong mental force to learn it.
Aizen attempted to quickly learn the technique through the system but was met with a system prompt:
"Insufficient task Wisdom points. Two thousand points are required to quickly learn this technique."
Since the message specified a lack of task Wisdom points and did not mention any unmet prerequisites, did this mean his mental strength was already sufficient?
Could it be that as long as he accumulated the required task Wisdom points, he could quickly learn the technique?
Wisdom wasn't entirely sure but had a rough idea.