"We searched for a method that does not require using those 250 year methods. As a result, Tree Diagram led us to a different method than the usual Curriculum. It is based on the fact that use of powers in actual battle quickens the growth process. There have been many reports of those with Telekinesis or Pyrokinesis gaining increased accuracy, so we are going to take advantage of this. By preparing special battlefields and having the battles proceed according to specific scenarios, we can control the direction of the growth gained in the battles."
(...)
"According to the calculations carried out by Tree Diagram's simulator, it was determined that preparing 128 types of battlefields and having him kill Railgun 128 times would allow Accelerator to shift to Level 6."
(...)
"According to Tree Diagram's recalculation based on those criteria, it was determined that preparing 20,000 battlefields and 20,000 Sisters would produce the same result as described above."
However, they were going ahead and doing things that were wrong based on that wrongness.
"The 20,000 types of battlefields and battle scenarios are explained in a different report."
Kamijou wondered what was written in that other report.
Twenty thousand ways of dying. By going down the list of the Sisters' numbers, you could see when, where, and how they would all die. It was simply too repulsive. What Kamijou found most repulsive was not the ones carrying out the killing. It was the fact that the ones being killed were continuing to follow through with the scenario.