Katsuyu, within the area, immediately sensed that something was wrong. Since it resided in the sacred land itself, it could detect natural energy at once. The natural energy here far exceeded that of the outside world. More importantly, a highly violent force was affecting that natural energy.
If Uchiha Yū had been nearby, he would certainly have looked helpless. The Radiation Element within his body was innate. Even under his deliberate control, only a small amount of Radiation Element leaked out, but once it merged with natural energy, it made the already invasive natural energy even more uncontrollable.
Tsunade, in the midst of battle, suddenly froze. She had finally found the cause of the illness. She had once visited Shikkotsu Forest and learned Sage Mode amid its powerful natural energy.
In dense natural energy, people could mutate. Looking at their symptoms again, they were exactly the same as those caused by practicing senjutsu!
Unfortunately, this was not the time to deal with the illness. They had to face the immediate threat of attack.
The deadly formation created through the coordination of ten people had put them at a disadvantage.
Katsuyu's sudden arrival, aided by its enormous body, interrupted the attacks of the ten men.
Two of the ninjas watched their blades cut across Katsuyu's body, leaving behind a layer of corrosive liquid. Steel was highly resistant to corrosion, yet this powerful corrosive fluid left black marks on the blades.
Combined with its enormous size and its determination to protect Tsunade's group, their ninjutsu would not have much effect when it struck the enemy.
"We absolutely cannot let them escape!"
"Wind Release! Wind Pressure!"
Seeing the group about to leave the swamp, Kakuzu, stationed nearby, could no longer sit still. He directly used ninjutsu, all of it common, run-of-the-mill techniques. Even