Developed by a team centered on Dr. Ver, it is a device that directly intervenes with a human’s brain.

As the Jumbo helicopter “air carrier,” was equipped with the “Wizardry Stealth” and “Remover Ray,” the US’ heretical technology is largely detached from the ones in other countries (mainly Japan), with regards to mechanically controlling a Sacrist’s power, and the Direct Feedback System is counted as among one of them.

It has also been cruelly applied to the warping of Miku Kohinata’s feelings, for the said donning of the Shén Shòu Jìng Symphogear.

After the conclusion of the Frontier Incident, a few pieces of evidence had been seized, with the Direct Feedback System being one of them.