Chapter 15
He learned a harsh lesson when he tried to maintain a complex copy for too long. He manifested a copied Senju chunin to run a three-day scouting simulation. On the third day, as the copy traversed difficult terrain, Itama felt a draining pull so severe he collapsed. His chakra reserves, deep as they were, had been nearly emptied sustaining another full human consciousness and body. The copy dissolved, and Itama slept for twenty hours.
He established rules: copies for combat would be short, brutal, and disposable. Copies for information gathering would be simple, low-chakra constructs like birds or insects. A human copy was a luxury to be used with extreme strategic precision.