One scenario is that the soul training has failed, with the soul completely losing its response to external stimuli.
Another scenario is that it has been tamed, contributing faith values automatically even without the need for external stimuli.
For instance, Amu is an example.
Soul Drain has almost become a reward for this guy, Luo Yan sometimes feels too disgusted to even use it on him.
When this theory is integrated into Predecessor Linte Isaac's system, it essentially means temporary benefits are added to the "daily growth" item.
Although the one-time contributions are not significant, the fact they contribute every day means it's ultimately a good thing.
Thinking about how he had caused a lifetime of psychological shadows to these little thieves, Luo Yan was even more satisfied with his inhuman actions.
Once the training is completely successful, he can release these "missionaries" to spread the terror of Lord Demon King in human towns.
