There's no element of mind control; all changes stem from the heart.
Even beings as powerful as the Nekomata, despite controlling Higurashi Gushan through sheer force, still experienced inevitable backlash over time.
After advancing to the Second Tier, the differing sense of belonging among Demon Hunters began to create disparities in their promotion speeds.
This is a process of natural selection. Although a strong sense of belonging cannot guarantee unwavering loyalty or undying commitment to Roger or Kaer Morhen,
Roger believes this approach is far superior to mind control.
No matter how powerful, control always carries the risk of failure, whereas decisions originating from one's own heart tend to be firmer.
Recently, Henrik has been intensifying the selection process, yet as the influence expanded, many hidden risks began to surface.
This posed significant challenges to his work.
