Aizen's facial muscles twitched. "After hearing you sing that lullaby, I'll have insomnia for the rest of the month! Please, spare me!"
Smash It! Smash It All!
Watching his teacher's departing back, Aizen took a deep breath.
He had finally muddled through this matter.
Next, he needed to begin the Soul Reaper Hollowfication Experiment.
The hardest part was where he could find so many test subjects.
Yamabuki Chidori had tolerated Aizen all this time because what he did had not harmed Soul Society.
In fact, quite a few things had accidentally benefited Soul Society. But researching Soul Reaper Hollowfication required a large number of Soul Reapers as experimental subjects.
Aizen was almost certain that if he used ordinary Soul Reapers as test subjects, he might not even live to see the next day's sun.
He would be beaten to death that very night.
Just thinking about it gave Aizen a headache.
In the past, it had been easy to get things done with a powerful backer. With Yamabuki Chidori's help, Aizen had reached captain-level strength in just ten years and gained considerable popularity within the Gotei 13.
But now that he had the strength to carry out his plan, his teacher had become his greatest obstacle.
Just as Aizen was nursing his headache, someone knocked on the office door.
"Come in." Aizen immediately resumed his gentle demeanor.
A Staff Officer entered from outside, holding a stack of documents and peering into the room.
"Aizen? Why are you here? Have you seen where the Chief Strategist went?" the Staff Officer asked curiously.
"Teacher should have gone to the First Division. If there are documents, you can leave them on his desk first. I'll tell him when he returns," Aizen said with a smile.
The Staff Officer did not think much of