The Slug within immediately sensed that something was wrong. Since it came from a sacred land, it could detect Natural Energy at once. The Natural Energy here far surpassed that of the outside world, and more importantly, a tremendously violent force was affecting it.
If Uchiha Yuu had been nearby, he would definitely have looked helpless. The Radioactive Element within his body was innate. Even under his deliberate control, with only a small amount leaking out and merging into the 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.
Under dense Natural Energy, people could mutate. Looking at their symptoms again, they were exactly the same as those caused by practicing Senjutsu!
Unfortunately, now was not the time to address the illness. They needed to deal with the immediate threat.
The killing formation created through the coordination of ten people had placed them at a disadvantage.
The Slug's sudden arrival, aided by its enormous body, interrupted the attacks of all ten opponents.
Two of the ninjas watched their blades slice across the Slug's body, leaving behind a layer of corrosive fluid. Steel possessed great resistance to corrosion, yet this powerful corrosive liquid still left a black mark across the blades.
Combined with the Slug's massive size and its determination to protect Tsunade's group, their ninjutsu would not have much effect when it struck the enemy.
"Don't let them escape!"
"Wind Release! Wind Pressure!"
Seeing the group about to leave the swamp, Kakuzu could no longer remain idle. He directly unleashed ninjutsu, all of it common, unremarkable techniques. Even if Konoha investigated, they would never trace