"The goal of healing techniques is to repair the damaged skin instead of making the flesh replicate to close the wound," Iri said. "Do you know why?"
"... Because the natural process is limited and takes time?" Raiden asked after he thought for a few moments.
"Yes, you got it right," Iri nodded. "However, there is a risk of causing more injury too if you are careless trying to control the body of another person or yours."
It made sense... Aura Force can do harm too, so using it to control the body of another in an unnatural way could cause issues too, it was only obvious. Something like that should have happened in the past and the results should have been catastrophic.