Talk:Renner Theiere Chardelon Ryle Vaiself/@comment-86.20.101.249-20151123021211/@comment-203.215.119.163-20151123034211

Possible reasons:

1) Mind control has an area limit. That means Demiurge has to be next to Renner all the time for the mind-control to keep its effect.

2) Altering 10 seconds worth of memory consumes TONS of MP. Proof is on Volume 1 when Ainz changed Enri's memory of seeing his face. Likewise, only Ainz has a skill to alter memories and it will take an eternity to alter 1 year's worth of any person's memories.

3) Your question is on the same sense as "why Nazarick are controlling from the shadows while they could just roll over all humans to conquer?" But why they didn't? If you have the answer to this question then you might as well as have the answer to your question.