There's some magic involved, but there is also some genuine tech - it makes it hard to figure out the nature of with the Third Eye, where the cause and effect bleeds together. It is definitely centered in that implant, though, rooted deep into Yukio's brain.

"No," Yukio says Rita, simply, and drops the rifle to the ground, discarded utterly without care. "I hardly need a mortal vessel to fight my battles. I've been distracted, though... I'm taking some time to catch up."

He looks right at Rin. "Your brother accepted my touch of his own will."