"AT force field."
The AT force field, or Absolute Terror Field, was something Layton found in his past life memories from the Evangelion franchise. According to what he remembered and understood, the AT force field was a barrier that everyone had, a barrier which all souls possess. This barrier enabled them to have self-knowledge and rational thought. According to the records left in Layton's mind, it was the existence of such barriers that prevented humans from understanding each other, allowing each individual to possess ego and a sense of self, which allowed one to exist as an independent being.
Some special humans or angels who had a stronger AT force field than others were able to materialize such a barrier, endowing themselves with a sort of absolute defense, impenetrable without special means.
