Chakra Seal

“With this, you won’t be getting far,” said the Doctor, before flipping Naruto onto his front, and applying the seal to Naruto’s back. The symbols spread out, reaching all over his body before surging back in to reveal what looked like the head of a cow on his lower back.

“No more jutsu for you,” she mumbled, reassured that what could be her best subject had their chances of escape drastically reduced.

“Hmm, yes,” she said, “I thinks it’s best to get you you situated with the next step of the procedure right away.” Walking through a door to another room in the basement she started to prepare a machine.