Forbidden ninjutsu was like a switch that opened Pandora's Box.
Though ninjutsu itself was powerful, it came with considerable side effects. Everyone would only treat it as a secret weapon rather than use it on a large scale. No one was willing to casually throw away their life.
Konoha, caught up in the war, received both good news and bad news.
The good news was that the enemy had not used forbidden ninjutsu. Uchiha Yū merely treated such techniques as prized possessions, and they held considerable research value. However, the monsters they summoned would not play a decisive role on the battlefield. They would only cause widespread chaos and make the shinobi who had defected wary. No one wanted to become a sacrifice.
The bad news was that many black monsters had appeared on the battlefield. These creatures could absorb shinobi's chakra and life force. Then there was the emergence of scientific ninja tools. When two shinobi were equally strong, scientific ninja tools were equivalent to reserve chakra storage devices. They could also unexpectedly unleash chakra-based ninjutsu, inflicting heavy casualties on Konoha's shinobi.
It was impossible for Konoha to catch up to Dawn Hidden Village in either of these areas. Dawn Hidden Village had begun preparing for war long before the conflict arrived, and its technology had now matured. After Konoha's shinobi killed Dawn Hidden Village shinobi, they stripped the equipment from the corpses to make up for their own shortcomings, while also sending it to the rear for urgent research.
But Konoha was not completely unprepared. They also had powerful allies, and the arrival of these two allies made the current situation even more chaotic.
When they appeared on the battlefield, Dawn Hidden Village's shinobi sent the relevant information to Uchiha Yū in the rear.
Sitting in his office,