"The artificial nervous system called Etherlite.
In terms you can understand, a filament only one micron thick.
Think of it as a thread you cannot see using the naked eye."

"......!"

"...... No way. I do feel something strange on my temple, but that───"

"Yes. Upon contact with your skin, it seeks out your nerves and fuses with them.
The maximum range is 5,000 meters, so it is a simple matter for it to fill your entire body."